style(controller): fix flake8

Author: Matthew Fisher

controller/api/models.py

@@ -10,7 +10,6 @@
 import logging
 import os
 import subprocess
-from urlparse import urlparse
 
 from celery.canvas import group
 from django.conf import settings

controller/api/tasks.py

@@ -9,7 +9,6 @@
 
 import requests
 import threading
-from urlparse import urlparse
 
 from celery import task
 from django.conf import settings
@@ -44,7 +43,7 @@ def import_repository(source, target_repository):
     data = {
         'src': source,
     }
-    response = requests.post(
+    requests.post(
         '{}/v1/repositories/{}/tags'.format(settings.REGISTRY_URL,
                                             target_repository),
         data=data,