Remove #noqa from django.conf.urls.include

We have one more import with #noqa: django.conf.urls.include that is also
commonly used in urls.py module and could be included to the list of
import exceptions. This change has also revealed one unused import.

Change-Id: I47cc582340625aac87ab0242b147e11ef1d9b38e
Merge "Remove #noqa from django.conf.urls.include"