Remove unused variables ‘LOG'

Perhaps it will be used for debbuging, but now it's unused.

Change-Id: Ie7f5b8461f45a30455c2278b5d67cd392a4f49f8

qinling/db/sqlalchemy/api.py

@@ -19,7 +19,6 @@ import threading
 from oslo_config import cfg
 from oslo_db import exception as oslo_db_exc
 from oslo_db.sqlalchemy import utils as db_utils
-from oslo_log import log as logging
 import sqlalchemy as sa
 
 from qinling import context
@@ -31,7 +30,6 @@ from qinling import exceptions as exc
 from qinling import status
 
 CONF = cfg.CONF
-LOG = logging.getLogger(__name__)
 
 _SCHEMA_LOCK = threading.RLock()
 _initialized = False

qinling/rpc.py

@@ -13,15 +13,12 @@
 #    limitations under the License.
 
 from oslo_config import cfg
-from oslo_log import log as logging
 import oslo_messaging as messaging
 from oslo_messaging.rpc import client
 
 from qinling import context as ctx
 from qinling import exceptions as exc
 
-LOG = logging.getLogger(__name__)
-
 _TRANSPORT = None
 _ENGINE_CLIENT = None