Remove redundant code

portal/auth_backends.py

@@ -11,9 +11,3 @@ class TokenAuthBackend(ModelBackend):
             return User.objects.get(profile__api_token=token)
         except User.DoesNotExist:
             return None
-
-    def get_user(self, user_id):
-        try:
-            return User.objects.get(pk=user_id)
-        except User.DoesNotExist:
-            return None