Remove unused code

There were a couple of files that import from oslo_log
but never actually used it, remove them.

Trivial-fix

Change-Id: Ia261d717645606e458b826664037895fa07e646a

neutron_lib/api/definitions/network_segment_range.py

@@ -16,9 +16,6 @@ from neutron_lib.api import converters
 from neutron_lib.api.definitions import provider_net as providernet
 from neutron_lib import constants
 from neutron_lib.db import constants as db_const
-from oslo_log import log as logging
-
-LOG = logging.getLogger(__name__)
 
 # The name of the extension.
 NAME = 'Neutron Network Segment Range'

neutron_lib/placement/utils.py

@@ -15,16 +15,12 @@
 import uuid
 
 import os_traits
-from oslo_log import log as logging
 
 from neutron_lib._i18n import _
 from neutron_lib import constants as const
 from neutron_lib.placement import constants as place_const
 
 
-LOG = logging.getLogger(__name__)
-
-
 def physnet_trait(physnet):
     """A Placement trait name to represent being connected to a physnet.