Simplify code, remove import

mayan/apps/documents/managers.py

@@ -3,7 +3,6 @@ from __future__ import absolute_import
 from ast import literal_eval
 
 from django.db import models
-from django.utils.timezone import now
 
 from .settings import RECENT_COUNT
 
@@ -34,8 +33,8 @@ class RecentDocumentManager(models.Manager):
         if user.is_authenticated():
             new_recent, created = self.model.objects.get_or_create(user=user, document=document)
             if not created:
-                # document already in the recent list, just update the accessed date and time
-                new_recent.datetime_accessed = now()
+                # document already in the recent list, just save to force
+                # accessed date and time update
                 new_recent.save()
             for recent_to_delete in self.model.objects.filter(user=user)[RECENT_COUNT:]:
                 recent_to_delete.delete()