PEP8 Cleanups (471 warnings).

mayan/apps/document_indexing/views.py

@@ -1,6 +1,5 @@
 from __future__ import absolute_import, unicode_literals
 
-from django.conf import settings
 from django.contrib import messages
 from django.core.exceptions import PermissionDenied
 from django.core.urlresolvers import reverse, reverse_lazy