PEP8 cleanup, remove unused imports, fix permission check when removing metadata from a document

mayan/apps/document_indexing/api.py

@@ -2,7 +2,6 @@ from __future__ import unicode_literals
 
 import logging
 
-from django.db.models import Q
 from django.utils.translation import ugettext_lazy as _
 
 from .models import Index, IndexInstanceNode

mayan/apps/document_indexing/south_migrations/0007_auto__del_documentrenamecount.py

@@ -1,5 +1,4 @@
 # -*- coding: utf-8 -*-
-from south.utils import datetime_utils as datetime
 from south.db import db
 from south.v2 import SchemaMigration
 from django.db import models
@@ -11,7 +10,6 @@ class Migration(SchemaMigration):
         # Deleting model 'DocumentRenameCount'
         db.delete_table(u'document_indexing_documentrenamecount')
 
-
     def backwards(self, orm):
         # Adding model 'DocumentRenameCount'
         db.create_table(u'document_indexing_documentrenamecount', (
@@ -22,7 +20,6 @@ class Migration(SchemaMigration):
         ))
         db.send_create_signal('document_indexing', ['DocumentRenameCount'])
 
-
     models = {
         u'document_indexing.index': {
             'Meta': {'object_name': 'Index'},
@@ -75,4 +72,4 @@ class Migration(SchemaMigration):
         }
     }
 
-    complete_apps = ['document_indexing']
+    complete_apps = ['document_indexing']