Remove autoadmin code and move it to the external django-autoadmin package

mayan/apps/common/handlers.py

@@ -3,20 +3,10 @@ from __future__ import unicode_literals
 from django.conf import settings
 
 from .models import (
-    AnonymousUserSingleton, AutoAdminSingleton, UserLocaleProfile
+    AnonymousUserSingleton, UserLocaleProfile
 )
 
 
-def auto_admin_account_passwd_change(sender, instance, **kwargs):
-    auto_admin_properties = AutoAdminSingleton.objects.get()
-    if instance == auto_admin_properties.account and instance.password != auto_admin_properties.password_hash:
-        # Only delete the auto admin properties when the password has been changed
-        auto_admin_properties.account = None
-        auto_admin_properties.password = None
-        auto_admin_properties.password_hash = None
-        auto_admin_properties.save()
-
-
 def user_locale_profile_session_config(sender, request, user, **kwargs):
     if hasattr(request, 'session'):
         user_locale_profile, created = UserLocaleProfile.objects.get_or_create(user=user)