Get rid of some obsolete imports

resources/lib/kodi_db/video.py

@@ -5,7 +5,7 @@ from logging import getLogger
 from sqlite3 import IntegrityError
 
 from . import common
-from .. import path_ops, timing, variables as v, app
+from .. import path_ops, timing, variables as v
 
 LOG = getLogger('PLEX.kodi_db.video')
 

resources/lib/playback_decision.py

@@ -6,7 +6,7 @@ from requests import exceptions
 
 from .downloadutils import DownloadUtils as DU
 from .plex_api import API
-from . import plex_functions as PF, utils, app, variables as v
+from . import plex_functions as PF, utils, variables as v
 
 
 LOG = getLogger('PLEX.playback_decision')

resources/lib/plex_api/file.py

@@ -2,7 +2,6 @@
 # -*- coding: utf-8 -*-
 from __future__ import absolute_import, division, unicode_literals
 
-from ..utils import cast
 from .. import utils, variables as v, app