Drop unused import cfg

The cfg have not been used in these models, so we should drop it.
And I I have looked at the whole project. No other similar needs
to be modified.

Change-Id: Idead576f8c905b3dddb3b402aee9177431a578ca

glance/api/v2/metadef_tags.py

@@ -13,7 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_serialization import jsonutils
 from oslo_utils import encodeutils
@@ -34,8 +33,6 @@ import glance.schema
 
 LOG = logging.getLogger(__name__)
 
-CONF = cfg.CONF
-
 
 class TagsController(object):
     def __init__(self, db_api=None, policy_enforcer=None, notifier=None,

glance/db/sqlalchemy/glare.py

@@ -17,7 +17,6 @@ import operator
 import uuid
 
 from enum import Enum
-from oslo_config import cfg
 from oslo_db import exception as db_exc
 import sqlalchemy
 from sqlalchemy import and_
@@ -36,8 +35,6 @@ from oslo_log import log as os_logging
 
 LOG = os_logging.getLogger(__name__)
 
-CONF = cfg.CONF
-
 
 class Visibility(Enum):
     PRIVATE = 'private'

glance/tests/unit/common/test_rpc.py

@@ -16,7 +16,6 @@
 #    under the License.
 import datetime
 
-from oslo_config import cfg
 from oslo_serialization import jsonutils
 from oslo_utils import encodeutils
 import routes
@@ -29,8 +28,6 @@ from glance.common import wsgi
 from glance.tests.unit import base
 from glance.tests import utils as test_utils
 
-CONF = cfg.CONF
-
 
 class FakeResource(object):
     """

glance/tests/unit/v1/test_registry_api.py

@@ -19,7 +19,6 @@ import datetime
 import uuid
 
 import mock
-from oslo_config import cfg
 from oslo_serialization import jsonutils
 import routes
 import six
@@ -36,8 +35,6 @@ from glance.registry.api import v1 as rserver
 from glance.tests.unit import base
 from glance.tests import utils as test_utils
 
-CONF = cfg.CONF
-
 _gen_uuid = lambda: str(uuid.uuid4())
 
 UUID1 = _gen_uuid()

glance/tests/unit/v2/test_images_resource.py

@@ -18,7 +18,6 @@ import uuid
 
 import glance_store as store
 import mock
-from oslo_config import cfg
 from oslo_serialization import jsonutils
 import six
 # NOTE(jokke): simplified transition to py3, behaves like py2 xrange
@@ -39,8 +38,6 @@ DATETIME = datetime.datetime(2012, 5, 16, 15, 27, 36, 325355)
 ISOTIME = '2012-05-16T15:27:36Z'
 
 
-CONF = cfg.CONF
-
 BASE_URI = unit_test_utils.BASE_URI
 
 

glance/tests/unit/v2/test_registry_api.py

@@ -18,7 +18,6 @@
 import datetime
 import uuid
 
-from oslo_config import cfg
 from oslo_serialization import jsonutils
 import routes
 import six
@@ -34,8 +33,6 @@ from glance.registry.api import v2 as rserver
 from glance.tests.unit import base
 from glance.tests import utils as test_utils
 
-CONF = cfg.CONF
-
 _gen_uuid = lambda: str(uuid.uuid4())
 
 UUID1 = _gen_uuid()