Tests: Remove the redundant method

This patch removes the redundant setUp() methods in order to
keep the code clean, In the subclass, setUp() methods has no
benefit from that, the one in superclass could satisfy that

Change-Id: I0114e4dcfe99b1c151ce84cace0fecb7952e3ef8

mistral/tests/unit/db/v2/test_db_model.py

@@ -39,9 +39,6 @@ WF_EXEC = {
 
 
 class DBModelTest(test_base.DbTestCase):
-    def setUp(self):
-        super(DBModelTest, self).setUp()
-
     def test_iterate_column_names(self):
         wf_ex = db_api.create_workflow_execution(WF_EXEC)
 

mistral/tests/unit/engine/test_tasks_function.py

@@ -197,9 +197,6 @@ workflows:
 
 
 class TasksFunctionTest(base.EngineTestCase):
-    def setUp(self):
-        super(TasksFunctionTest, self).setUp()
-
     def _assert_published_tasks(self, task, published_key,
                                 expected_tasks_count=None,
                                 expected_tasks_names=None):

mistral/tests/unit/test_coordination.py

@@ -21,9 +21,6 @@ from mistral.tests.unit import base
 
 
 class ServiceCoordinatorTest(base.BaseTest):
-    def setUp(self):
-        super(ServiceCoordinatorTest, self).setUp()
-
     def test_start(self):
         cfg.CONF.set_default(
             'backend_url',

mistral/tests/unit/utils/test_utils.py

@@ -42,9 +42,6 @@ RIGHT = {
 
 
 class UtilsTest(base.BaseTest):
-    def setUp(self):
-        super(UtilsTest, self).setUp()
-
     def test_merge_dicts(self):
         left = copy.deepcopy(LEFT)
         right = copy.deepcopy(RIGHT)

mistral_tempest_tests/tests/base.py

@@ -60,9 +60,6 @@ class TestCase(test.BaseTestCase):
             cls.alt_client = mistral_client.MistralClientV2(
                 cls.alt_mgr.auth_provider, cls._service)
 
-    def setUp(self):
-        super(TestCase, self).setUp()
-
     def tearDown(self):
         super(TestCase, self).tearDown()