Move ENABLED_CACHES into schedule test base class

openedx/core/djangoapps/schedules/management/commands/tests/test_send_recurring_nudge.py

@@ -49,8 +49,6 @@ NUM_COURSE_MODES_QUERIES = 1
 class TestSendRecurringNudge(ScheduleBaseEmailTestBase):
     # pylint: disable=protected-access
 
-    ENABLED_CACHES = ['default']
-
     def setUp(self):
         super(TestSendRecurringNudge, self).setUp()
 

openedx/core/djangoapps/schedules/management/commands/tests/test_send_upgrade_reminder.py

@@ -62,8 +62,6 @@ LOG = logging.getLogger(__name__)
 @freeze_time('2017-08-01 00:00:00', tz_offset=0, tick=True)
 class TestUpgradeReminder(ScheduleBaseEmailTestBase, SharedModuleStoreTestCase):
 
-    ENABLED_CACHES = ['default']
-
     @classmethod
     def setUpClass(cls):
         super(TestUpgradeReminder, cls).setUpClass()

openedx/core/djangoapps/schedules/management/commands/tests/tools.py

 from openedx.core.djangolib.testing.utils import CacheIsolationTestCase, FilteredQueryCountMixin
 
 class ScheduleBaseEmailTestBase(FilteredQueryCountMixin, CacheIsolationTestCase):
-    pass
+
+    ENABLED_CACHES = ['default']