fix: Remove unused imports.

This code is being put back temporarily but rather than just ignoring
these unused imports, we may as well fix them.

cms/djangoapps/maintenance/tests.py

@@ -3,20 +3,15 @@
 """
 
 
-import json
-
 import ddt
 from django.conf import settings
 from django.urls import reverse
 
-from cms.djangoapps.contentstore.management.commands.utils import get_course_versions
 from common.djangoapps.student.tests.factories import AdminFactory, UserFactory
 from openedx.features.announcements.models import Announcement
-from xmodule.modulestore.django import modulestore  # lint-amnesty, pylint: disable=wrong-import-order
 from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase  # lint-amnesty, pylint: disable=wrong-import-order
-from xmodule.modulestore.tests.factories import CourseFactory, BlockFactory  # lint-amnesty, pylint: disable=wrong-import-order
 
-from .views import COURSE_KEY_ERROR_MESSAGES, MAINTENANCE_VIEWS
+from .views import MAINTENANCE_VIEWS
 
 # This list contains URLs of all maintenance app views.
 MAINTENANCE_URLS = [reverse(view['url']) for view in MAINTENANCE_VIEWS.values()]

cms/djangoapps/maintenance/views.py

@@ -6,17 +6,14 @@
 import logging
 
 from django.core.validators import ValidationError
-from django.db import transaction
 from django.urls import reverse, reverse_lazy
 from django.utils.decorators import method_decorator
 from django.utils.translation import gettext as _
 from django.views.generic import View
 from django.views.generic.edit import CreateView, DeleteView, UpdateView
 from django.views.generic.list import ListView
-from opaque_keys import InvalidKeyError
 from opaque_keys.edx.keys import CourseKey
 
-from cms.djangoapps.contentstore.management.commands.utils import get_course_versions
 from common.djangoapps.edxmako.shortcuts import render_to_response
 from common.djangoapps.util.json_request import JsonResponse
 from common.djangoapps.util.views import require_global_staff