BOM-2351: Removed unused imports from common/djangoapps/{track, util}

common/djangoapps/track/urls.py

 """
 URLs for track app
 """
-
-
-from django.conf import settings  # lint-amnesty, pylint: disable=unused-import
 from django.conf.urls import url
 
 from . import views

common/djangoapps/util/cache.py

@@ -10,7 +10,6 @@ not migrating so as not to inconvenience users by logging them all out.
 from functools import wraps
 
 import six
-from django.conf import settings  # lint-amnesty, pylint: disable=unused-import
 from django.core import cache
 # If we can't find a 'general' CACHE defined in settings.py, we simply fall back
 # to returning the default cache. This will happen with dev machines.

common/djangoapps/util/db.py

@@ -8,9 +8,8 @@ import random
 # TransactionManagementError used below actually *does* derive from the standard "Exception" class.
 # lint-amnesty, pylint: disable=bad-option-value, nonstandard-exception
 from contextlib import contextmanager
-from functools import wraps  # lint-amnesty, pylint: disable=unused-import
 
-from django.db import DEFAULT_DB_ALIAS, DatabaseError, Error, transaction  # lint-amnesty, pylint: disable=unused-import
+from django.db import DEFAULT_DB_ALIAS, transaction  # lint-amnesty, pylint: disable=unused-import
 
 from openedx.core.lib.cache_utils import get_cache
 

common/djangoapps/util/memcache.py

@@ -5,10 +5,7 @@ so that we can cache any keys, not just ones that memcache would ordinarily acce
 
 
 import hashlib
-
-import six.moves.urllib.error
 import six.moves.urllib.parse
-import six.moves.urllib.request
 from django.utils.encoding import smart_str