Removed fallback suport for allow_syncdb() in database routers per deprecation timeline.

django/db/utils.py

@@ -318,15 +318,8 @@ class ConnectionRouter(object):
 
     def allow_migrate(self, db, model, **hints):
         for router in self.routers:
-            try:
             try:
                 method = router.allow_migrate
-                except AttributeError:
-                    method = router.allow_syncdb
-                    warnings.warn(
-                        'Router.allow_syncdb has been deprecated and will stop working in Django 1.9. '
-                        'Rename the method to allow_migrate.',
-                        RemovedInDjango19Warning, stacklevel=2)
             except AttributeError:
                 # If the router doesn't have a method, skip to the next one.
                 pass