Remove useless assignment in notify_interested_services

synapse/handlers/appservice.py

@@ -70,7 +70,6 @@ class ApplicationServicesHandler(object):
         with Measure(self.clock, "notify_interested_services"):
             self.is_processing = True
             try:
-                upper_bound = self.current_max
                 limit = 100
                 while True:
                     upper_bound, events = yield self.store.get_new_events_for_appservice(