diff --git a/mistral/engine/utils.py b/mistral/engine/utils.py
index c8dda7dd..8d910c78 100644
--- a/mistral/engine/utils.py
+++ b/mistral/engine/utils.py
@@ -16,14 +16,10 @@
 import copy
 import six
 
-from oslo_log import log as logging
-
 from mistral.db.v2 import api as db_api
 from mistral import exceptions as exc
 from mistral import utils
 
-LOG = logging.getLogger(__name__)
-
 
 def validate_input(definition, input, spec=None):
     input_param_names = copy.deepcopy(list((input or {}).keys()))
diff --git a/mistral/tests/unit/actions/test_action_manager.py b/mistral/tests/unit/actions/test_action_manager.py
index cc0bcc3e..989ceb80 100644
--- a/mistral/tests/unit/actions/test_action_manager.py
+++ b/mistral/tests/unit/actions/test_action_manager.py
@@ -14,16 +14,11 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-from oslo_log import log as logging
-
 from mistral.actions import std_actions as std
 from mistral.services import action_manager as a_m
 from mistral.tests.unit import base
 
 
-LOG = logging.getLogger(__name__)
-
-
 class ActionManagerTest(base.DbTestCase):
     def test_register_standard_actions(self):
         action_list = a_m.get_registered_actions()
diff --git a/mistral/tests/unit/engine/test_action_context.py b/mistral/tests/unit/engine/test_action_context.py
index b5049773..9db2d82d 100644
--- a/mistral/tests/unit/engine/test_action_context.py
+++ b/mistral/tests/unit/engine/test_action_context.py
@@ -14,7 +14,6 @@
 
 import mock
 from oslo_config import cfg
-from oslo_log import log as logging
 import requests
 
 from mistral.actions import std_actions
@@ -25,8 +24,6 @@ from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
 
-LOG = logging.getLogger(__name__)
-
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
diff --git a/mistral/tests/unit/engine/test_action_defaults.py b/mistral/tests/unit/engine/test_action_defaults.py
index 49131047..9869fb8d 100644
--- a/mistral/tests/unit/engine/test_action_defaults.py
+++ b/mistral/tests/unit/engine/test_action_defaults.py
@@ -14,7 +14,6 @@
 
 import mock
 from oslo_config import cfg
-from oslo_log import log as logging
 import requests
 import six
 import testtools
@@ -26,7 +25,6 @@ from mistral.tests.unit import base as test_base
 from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_adhoc_actions.py b/mistral/tests/unit/engine/test_adhoc_actions.py
index 2d27670a..938ae4cc 100644
--- a/mistral/tests/unit/engine/test_adhoc_actions.py
+++ b/mistral/tests/unit/engine/test_adhoc_actions.py
@@ -13,14 +13,12 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.services import workbooks as wb_service
 from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_commands.py b/mistral/tests/unit/engine/test_commands.py
index 2b50f462..0eac3149 100644
--- a/mistral/tests/unit/engine/test_commands.py
+++ b/mistral/tests/unit/engine/test_commands.py
@@ -13,14 +13,12 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.services import workbooks as wb_service
 from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_cron_trigger.py b/mistral/tests/unit/engine/test_cron_trigger.py
index e79a3d84..43c101d4 100644
--- a/mistral/tests/unit/engine/test_cron_trigger.py
+++ b/mistral/tests/unit/engine/test_cron_trigger.py
@@ -15,7 +15,6 @@ import datetime
 
 import mock
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.services import periodic
@@ -24,7 +23,6 @@ from mistral.services import triggers
 from mistral.services import workflows
 from mistral.tests.unit.engine import base
 
-LOG = logging.getLogger(__name__)
 
 WORKFLOW_LIST = """
 ---
diff --git a/mistral/tests/unit/engine/test_dataflow.py b/mistral/tests/unit/engine/test_dataflow.py
index 7c9301ec..4db442e5 100644
--- a/mistral/tests/unit/engine/test_dataflow.py
+++ b/mistral/tests/unit/engine/test_dataflow.py
@@ -16,7 +16,6 @@
 import mock
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.db.v2.sqlalchemy import models
@@ -26,7 +25,6 @@ from mistral.tests.unit.engine import base as engine_test_base
 from mistral.workflow import data_flow
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_default_engine.py b/mistral/tests/unit/engine/test_default_engine.py
index be25da61..72a08d4c 100644
--- a/mistral/tests/unit/engine/test_default_engine.py
+++ b/mistral/tests/unit/engine/test_default_engine.py
@@ -18,7 +18,6 @@ import uuid
 
 import mock
 from oslo_config import cfg
-from oslo_log import log as logging
 from oslo_messaging.rpc import client as rpc_client
 
 from mistral.db.v2 import api as db_api
@@ -31,7 +30,6 @@ from mistral.tests.unit.engine import base as eng_test_base
 from mistral.workflow import states
 from mistral.workflow import utils as wf_utils
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_direct_workflow.py b/mistral/tests/unit/engine/test_direct_workflow.py
index b1a7545f..acffcd9b 100644
--- a/mistral/tests/unit/engine/test_direct_workflow.py
+++ b/mistral/tests/unit/engine/test_direct_workflow.py
@@ -14,7 +14,6 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral import exceptions as exc
@@ -24,8 +23,6 @@ from mistral.workflow import states
 from mistral.workflow import utils as wf_utils
 
 
-LOG = logging.getLogger(__name__)
-
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
diff --git a/mistral/tests/unit/engine/test_direct_workflow_with_cycles.py b/mistral/tests/unit/engine/test_direct_workflow_with_cycles.py
index e8ec3ab6..75bca80c 100644
--- a/mistral/tests/unit/engine/test_direct_workflow_with_cycles.py
+++ b/mistral/tests/unit/engine/test_direct_workflow_with_cycles.py
@@ -13,7 +13,6 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.services import workflows as wf_service
@@ -22,8 +21,6 @@ from mistral.workflow import data_flow
 from mistral.workflow import states
 
 
-LOG = logging.getLogger(__name__)
-
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
diff --git a/mistral/tests/unit/engine/test_environment.py b/mistral/tests/unit/engine/test_environment.py
index 9a404211..bf5587fd 100644
--- a/mistral/tests/unit/engine/test_environment.py
+++ b/mistral/tests/unit/engine/test_environment.py
@@ -14,7 +14,6 @@
 
 import mock
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.engine import default_executor
@@ -22,7 +21,6 @@ from mistral.engine import rpc
 from mistral.services import workbooks as wb_service
 from mistral.tests.unit.engine import base
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_error_result.py b/mistral/tests/unit/engine/test_error_result.py
index 4e44b988..3ce9e4f6 100644
--- a/mistral/tests/unit/engine/test_error_result.py
+++ b/mistral/tests/unit/engine/test_error_result.py
@@ -13,7 +13,6 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.actions import base as actions_base
 from mistral.db.v2 import api as db_api
@@ -24,7 +23,6 @@ from mistral.workflow import data_flow
 from mistral.workflow import states
 from mistral.workflow import utils as wf_utils
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_execution_fields_size_limitation.py b/mistral/tests/unit/engine/test_execution_fields_size_limitation.py
index a0c9b374..60832774 100644
--- a/mistral/tests/unit/engine/test_execution_fields_size_limitation.py
+++ b/mistral/tests/unit/engine/test_execution_fields_size_limitation.py
@@ -13,7 +13,6 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 import testtools
 
 from mistral.actions import base as actions_base
@@ -25,7 +24,6 @@ from mistral.tests.unit.engine import base
 from mistral.workflow import states
 from mistral.workflow import utils as wf_utils
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_javascript_action.py b/mistral/tests/unit/engine/test_javascript_action.py
index 2878429d..ec648e14 100644
--- a/mistral/tests/unit/engine/test_javascript_action.py
+++ b/mistral/tests/unit/engine/test_javascript_action.py
@@ -14,7 +14,6 @@
 
 import mock
 from oslo_config import cfg
-from oslo_log import log as logging
 import testtools
 
 from mistral.db.v2 import api as db_api
@@ -23,11 +22,12 @@ from mistral.tests.unit.engine import base
 from mistral.utils import javascript
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
+
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
 
+
 WORKBOOK = """
 ---
 version: "2.0"
diff --git a/mistral/tests/unit/engine/test_join.py b/mistral/tests/unit/engine/test_join.py
index 1691937f..ae64cdf8 100644
--- a/mistral/tests/unit/engine/test_join.py
+++ b/mistral/tests/unit/engine/test_join.py
@@ -13,7 +13,6 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 import testtools
 
 from mistral.db.v2 import api as db_api
@@ -22,7 +21,6 @@ from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
 
-LOG = logging.getLogger(__name__)
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
diff --git a/mistral/tests/unit/engine/test_noop_task.py b/mistral/tests/unit/engine/test_noop_task.py
index 4d50f88b..c48bbf50 100644
--- a/mistral/tests/unit/engine/test_noop_task.py
+++ b/mistral/tests/unit/engine/test_noop_task.py
@@ -13,14 +13,12 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.services import workflows as wf_service
 from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
diff --git a/mistral/tests/unit/engine/test_policies.py b/mistral/tests/unit/engine/test_policies.py
index 75a2c6ec..e2b6eb35 100644
--- a/mistral/tests/unit/engine/test_policies.py
+++ b/mistral/tests/unit/engine/test_policies.py
@@ -14,7 +14,6 @@
 
 import mock
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.actions import std_actions
 from mistral.db.v2 import api as db_api
@@ -26,11 +25,12 @@ from mistral.tests.unit.engine import base
 from mistral.workbook import parser as spec_parser
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
+
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
 
+
 WORKBOOK = """
 ---
 version: '2.0'
diff --git a/mistral/tests/unit/engine/test_race_condition.py b/mistral/tests/unit/engine/test_race_condition.py
index 036b2af5..dd18edcd 100644
--- a/mistral/tests/unit/engine/test_race_condition.py
+++ b/mistral/tests/unit/engine/test_race_condition.py
@@ -15,7 +15,6 @@
 from eventlet import corolocal
 from eventlet import semaphore
 from oslo_config import cfg
-from oslo_log import log as logging
 import testtools
 
 from mistral.actions import base as action_base
@@ -25,7 +24,6 @@ from mistral.tests.unit import base as test_base
 from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_reverse_workflow.py b/mistral/tests/unit/engine/test_reverse_workflow.py
index 1c52cc14..31080571 100644
--- a/mistral/tests/unit/engine/test_reverse_workflow.py
+++ b/mistral/tests/unit/engine/test_reverse_workflow.py
@@ -13,7 +13,6 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral import exceptions as exc
@@ -22,7 +21,6 @@ from mistral.services import workflows as wf_service
 from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_state_info.py b/mistral/tests/unit/engine/test_state_info.py
index d2d1eac6..9561f860 100644
--- a/mistral/tests/unit/engine/test_state_info.py
+++ b/mistral/tests/unit/engine/test_state_info.py
@@ -16,7 +16,6 @@
 import mock
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.actions import std_actions
 from mistral.db.v2 import api as db_api
@@ -25,7 +24,7 @@ from mistral.services import workflows as wf_service
 from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
+
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
diff --git a/mistral/tests/unit/engine/test_subworkflows.py b/mistral/tests/unit/engine/test_subworkflows.py
index 1c6a7341..5c7413f4 100644
--- a/mistral/tests/unit/engine/test_subworkflows.py
+++ b/mistral/tests/unit/engine/test_subworkflows.py
@@ -15,7 +15,6 @@
 
 import mock
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.actions import std_actions
 from mistral import context as auth_context
@@ -25,7 +24,6 @@ from mistral.services import workbooks as wb_service
 from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/engine/test_task_defaults.py b/mistral/tests/unit/engine/test_task_defaults.py
index 42bb0696..589d246e 100644
--- a/mistral/tests/unit/engine/test_task_defaults.py
+++ b/mistral/tests/unit/engine/test_task_defaults.py
@@ -14,7 +14,6 @@
 
 import datetime as dt
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.services import scheduler
@@ -23,7 +22,6 @@ from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
 
-LOG = logging.getLogger(__name__)
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
diff --git a/mistral/tests/unit/engine/test_with_items.py b/mistral/tests/unit/engine/test_with_items.py
index 70764646..356a05f6 100644
--- a/mistral/tests/unit/engine/test_with_items.py
+++ b/mistral/tests/unit/engine/test_with_items.py
@@ -14,7 +14,6 @@
 
 import copy
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.actions import base as action_base
 from mistral.db.v2 import api as db_api
@@ -30,7 +29,6 @@ from mistral.workflow import utils as wf_utils
 
 # TODO(nmakhotkin) Need to write more tests.
 
-LOG = logging.getLogger(__name__)
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
diff --git a/mistral/tests/unit/engine/test_workflow_variables.py b/mistral/tests/unit/engine/test_workflow_variables.py
index bff0a78a..9398f83e 100644
--- a/mistral/tests/unit/engine/test_workflow_variables.py
+++ b/mistral/tests/unit/engine/test_workflow_variables.py
@@ -13,7 +13,6 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.services import workflows as wf_service
@@ -21,8 +20,6 @@ from mistral.tests.unit.engine import base
 from mistral.workflow import states
 
 
-LOG = logging.getLogger(__name__)
-
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
 cfg.CONF.set_default('auth_enable', False, group='pecan')
diff --git a/mistral/tests/unit/engine/test_yaql_functions.py b/mistral/tests/unit/engine/test_yaql_functions.py
index df03580d..4ccf7f91 100644
--- a/mistral/tests/unit/engine/test_yaql_functions.py
+++ b/mistral/tests/unit/engine/test_yaql_functions.py
@@ -13,14 +13,12 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.services import workflows as wf_service
 from mistral.tests.unit.engine import base as engine_test_base
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/services/test_action_service.py b/mistral/tests/unit/services/test_action_service.py
index 4d37a506..bd7db568 100644
--- a/mistral/tests/unit/services/test_action_service.py
+++ b/mistral/tests/unit/services/test_action_service.py
@@ -13,7 +13,6 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.services import actions as action_service
@@ -21,7 +20,6 @@ from mistral.tests.unit import base
 from mistral import utils
 from mistral.workbook import parser as spec_parser
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/services/test_workbook_service.py b/mistral/tests/unit/services/test_workbook_service.py
index 42f2b382..aa2059bd 100644
--- a/mistral/tests/unit/services/test_workbook_service.py
+++ b/mistral/tests/unit/services/test_workbook_service.py
@@ -13,14 +13,12 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.services import workbooks as wb_service
 from mistral.tests.unit import base
 from mistral.workbook import parser as spec_parser
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/services/test_workflow_service.py b/mistral/tests/unit/services/test_workflow_service.py
index fb55c03d..5c6812cd 100644
--- a/mistral/tests/unit/services/test_workflow_service.py
+++ b/mistral/tests/unit/services/test_workflow_service.py
@@ -16,7 +16,6 @@
 import copy
 
 from oslo_config import cfg
-from oslo_log import log as logging
 
 from mistral.db.v2.sqlalchemy import api as db_api
 from mistral import exceptions as exc
@@ -26,7 +25,6 @@ from mistral import utils
 from mistral.workbook import parser as spec_parser
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
 
 # Use the set_default method to set value otherwise in certain test cases
 # the change in value is not permanent.
diff --git a/mistral/tests/unit/workbook/v2/base.py b/mistral/tests/unit/workbook/v2/base.py
index eb244f5e..6c62208a 100644
--- a/mistral/tests/unit/workbook/v2/base.py
+++ b/mistral/tests/unit/workbook/v2/base.py
@@ -14,7 +14,6 @@
 
 import copy
 
-from oslo_log import log as logging
 import yaml
 
 from mistral import exceptions as exc
@@ -23,9 +22,6 @@ from mistral import utils
 from mistral.workbook import parser as spec_parser
 
 
-LOG = logging.getLogger(__name__)
-
-
 class WorkflowSpecValidationTestCase(base.BaseTest):
 
     def __init__(self, *args, **kwargs):
diff --git a/mistral/tests/unit/workbook/v2/test_actions.py b/mistral/tests/unit/workbook/v2/test_actions.py
index bd86bc47..4e0c5612 100644
--- a/mistral/tests/unit/workbook/v2/test_actions.py
+++ b/mistral/tests/unit/workbook/v2/test_actions.py
@@ -14,15 +14,10 @@
 
 import copy
 
-from oslo_log import log as logging
-
 from mistral.tests.unit.workbook.v2 import base
 from mistral import utils
 
 
-LOG = logging.getLogger(__name__)
-
-
 class ActionSpecValidation(base.WorkbookSpecValidationTestCase):
 
     def test_base_required(self):
diff --git a/mistral/tests/unit/workbook/v2/test_workbook.py b/mistral/tests/unit/workbook/v2/test_workbook.py
index dd6e3d25..78d084b9 100644
--- a/mistral/tests/unit/workbook/v2/test_workbook.py
+++ b/mistral/tests/unit/workbook/v2/test_workbook.py
@@ -15,16 +15,12 @@
 
 import copy
 
-from oslo_log import log as logging
 import yaml
 
 from mistral import exceptions as exc
 from mistral.tests.unit.workbook.v2 import base
 
 
-LOG = logging.getLogger(__name__)
-
-
 class WorkbookSpecValidation(base.WorkbookSpecValidationTestCase):
 
     def test_build_valid_workbook_spec(self):
diff --git a/mistral/tests/unit/workbook/v2/test_workflows.py b/mistral/tests/unit/workbook/v2/test_workflows.py
index 82eb56f5..70cc6c49 100644
--- a/mistral/tests/unit/workbook/v2/test_workflows.py
+++ b/mistral/tests/unit/workbook/v2/test_workflows.py
@@ -14,15 +14,12 @@
 
 import copy
 
-from oslo_log import log as logging
 import yaml
 
 from mistral import exceptions as exc
 from mistral.tests.unit.workbook.v2 import base
 from mistral import utils
 
-LOG = logging.getLogger(__name__)
-
 
 class WorkflowSpecValidation(base.WorkflowSpecValidationTestCase):
     def test_workflow_types(self):
diff --git a/mistral/tests/unit/workflow/test_direct_workflow.py b/mistral/tests/unit/workflow/test_direct_workflow.py
index c19d6373..8e864a0e 100644
--- a/mistral/tests/unit/workflow/test_direct_workflow.py
+++ b/mistral/tests/unit/workflow/test_direct_workflow.py
@@ -13,7 +13,6 @@
 #    limitations under the License.
 
 import mock
-from oslo_log import log as logging
 
 from mistral.db.v2 import api as db_api
 from mistral.db.v2.sqlalchemy import models
@@ -23,8 +22,6 @@ from mistral.workbook import parser as spec_parser
 from mistral.workflow import direct_workflow as d_wf
 from mistral.workflow import states
 
-LOG = logging.getLogger(__name__)
-
 
 class DirectWorkflowControllerTest(base.DbTestCase):
     def _prepare_test(self, wf_text):
diff --git a/mistral/tests/unit/workflow/test_reverse_workflow.py b/mistral/tests/unit/workflow/test_reverse_workflow.py
index 5643dff0..abd42956 100644
--- a/mistral/tests/unit/workflow/test_reverse_workflow.py
+++ b/mistral/tests/unit/workflow/test_reverse_workflow.py
@@ -12,8 +12,6 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-from oslo_log import log as logging
-
 from mistral.db.v2.sqlalchemy import models
 from mistral import exceptions as exc
 from mistral.tests.unit import base
@@ -22,8 +20,6 @@ from mistral.workflow import reverse_workflow as reverse_wf
 from mistral.workflow import states
 
 
-LOG = logging.getLogger(__name__)
-
 # TODO(rakhmerov): This workflow is too simple. Add more complicated one.
 
 WB = """
diff --git a/mistral/tests/unit/workflow/test_states.py b/mistral/tests/unit/workflow/test_states.py
index f234f7b7..d0f7068a 100644
--- a/mistral/tests/unit/workflow/test_states.py
+++ b/mistral/tests/unit/workflow/test_states.py
@@ -14,13 +14,9 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
-from oslo_log import log as logging
-
 from mistral.tests.unit import base
 from mistral.workflow import states as s
 
-LOG = logging.getLogger(__name__)
-
 
 class StatesModuleTest(base.BaseTest):
     def test_is_valid_transition(self):
diff --git a/tools/sync_db.py b/tools/sync_db.py
index 76b16be9..7e70d3c8 100644
--- a/tools/sync_db.py
+++ b/tools/sync_db.py
@@ -22,7 +22,6 @@ from mistral.services import workflows
 
 
 CONF = cfg.CONF
-LOG = logging.getLogger(__name__)
 
 
 def main():