Fix removing of pushers when using workers

synapse/replication/tcp/resource.py

@@ -67,6 +67,7 @@ def __init__(self, hs):
         self.store = hs.get_datastore()
         self.presence_handler = hs.get_presence_handler()
         self.clock = hs.get_clock()
+        self.notifier = hs.get_notifier()
 
         # Current connections.
         self.connections = []
@@ -99,7 +100,7 @@ def __init__(self, hs):
         if not hs.config.send_federation:
             self.federation_sender = hs.get_federation_sender()
 
-        hs.get_notifier().add_replication_callback(self.on_notifier_poke)
+        self.notifier.add_replication_callback(self.on_notifier_poke)
 
         # Keeps track of whether we are currently checking for updates
         self.is_looping = False