[Update] 去掉perms cache enable settings

apps/perms/apps.py

@@ -1,14 +1,7 @@
 from __future__ import unicode_literals
 
-from django.conf import settings
 from django.apps import AppConfig
 
 
 class PermsConfig(AppConfig):
     name = 'perms'
-
-    def ready(self):
-        from . import signals_handler
-        if not settings.XPACK_ENABLED:
-            settings.ASSETS_PERM_CACHE_ENABLE = False
-        return super().ready()