Remove unused logging import and LOG global var

In some modules the global LOG is not used any more. And the import
of logging is not used. This patch removes the unused logging import
and LOG vars.

Change-Id: I794ee719d76f04e70154cf67f726152fbb1ba15a

watcher/decision_engine/manager.py

@@ -38,13 +38,11 @@ See :doc:`../architecture` for more details on this component.
 """
 
 from oslo_config import cfg
-from oslo_log import log
 
 from watcher.common.messaging import messaging_core
 from watcher.decision_engine.messaging import audit_endpoint
 
 
-LOG = log.getLogger(__name__)
 CONF = cfg.CONF
 
 WATCHER_DECISION_ENGINE_OPTS = [

watcher/decision_engine/model/model_root.py

@@ -13,16 +13,12 @@
 # implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-from oslo_log import log
-
 from watcher._i18n import _
 from watcher.common import exception
 from watcher.decision_engine.model import hypervisor
 from watcher.decision_engine.model import mapping
 from watcher.decision_engine.model import vm
 
-LOG = log.getLogger(__name__)
-
 
 class ModelRoot(object):
     def __init__(self):

watcher/decision_engine/planner/loading/default.py

@@ -17,12 +17,8 @@
 
 from __future__ import unicode_literals
 
-from oslo_log import log
-
 from watcher.common.loader.default import DefaultLoader
 
-LOG = log.getLogger(__name__)
-
 
 class DefaultPlannerLoader(DefaultLoader):
     def __init__(self):

watcher/decision_engine/rpcapi.py

@@ -18,7 +18,6 @@
 #
 
 from oslo_config import cfg
-from oslo_log import log
 
 from watcher.common import exception
 from watcher.common.messaging import messaging_core
@@ -28,7 +27,6 @@ from watcher.decision_engine.manager import decision_engine_opt_group
 from watcher.decision_engine.manager import WATCHER_DECISION_ENGINE_OPTS
 
 
-LOG = log.getLogger(__name__)
 CONF = cfg.CONF
 
 CONF.register_group(decision_engine_opt_group)

watcher/decision_engine/solution/default.py

@@ -16,14 +16,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from oslo_log import log
-
 from watcher.applier.actions import base as baction
 from watcher.common import exception
 from watcher.decision_engine.solution import base
 
-LOG = log.getLogger(__name__)
-
 
 class DefaultSolution(base.BaseSolution):
     def __init__(self):

watcher/decision_engine/strategy/loading/default.py

@@ -19,12 +19,9 @@
 
 from __future__ import unicode_literals
 
-from oslo_log import log
 
 from watcher.common.loader import default
 
-LOG = log.getLogger(__name__)
-
 
 class DefaultStrategyLoader(default.DefaultLoader):
     def __init__(self):

watcher/decision_engine/strategy/strategies/base.py

@@ -37,16 +37,12 @@ which are dynamically loaded by Watcher at launch time.
 """
 
 import abc
-
-from oslo_log import log
 import six
 
 from watcher.common import clients
 from watcher.decision_engine.solution import default
 from watcher.decision_engine.strategy.common import level
 
-LOG = log.getLogger(__name__)
-
 
 @six.add_metaclass(abc.ABCMeta)
 class BaseStrategy(object):