More PEP8/pylint cleanup

cms/djangoapps/contentstore/tests/test_course_create_rerun.py

@@ -41,7 +41,6 @@ class TestCourseListing(ModuleStoreTestCase):
         for role in [CourseInstructorRole, CourseStaffRole]:
             role(self.source_course_key).add_users(self.user)
 
-
     def tearDown(self):
         """
         Reverse the setup

cms/djangoapps/contentstore/views/course.py

@@ -29,8 +29,6 @@ from opaque_keys.edx.locations import Location
 from opaque_keys.edx.keys import CourseKey
 
 from django_future.csrf import ensure_csrf_cookie
-from util.json_request import JsonResponse
-from edxmako.shortcuts import render_to_response
 from contentstore.course_info_model import get_course_updates, update_course_updates, delete_course_update
 from contentstore.utils import (
     add_instructor,