remove accidental commit

tests/storage/test_monthly_active_users.py

@@ -30,7 +30,6 @@ class MonthlyActiveUsersTestCase(tests.unittest.TestCase):
     def setUp(self):
         self.hs = yield setup_test_homeserver(self.addCleanup)
         self.store = self.hs.get_datastore()
-        self.hs.config.max_mau_value = 2
         self.hs.config.mau_trial_days = 0
 
     @defer.inlineCallbacks