Clean up 'self._federation' var

synapse/handlers/presence.py

@@ -130,11 +130,9 @@ def __init__(self, hs: "HomeServer"):
         self.state = hs.get_state_handler()
 
         self._federation = None
-        if hs.should_send_federation() or not hs.config.worker_app:
+        if hs.should_send_federation():
             self._federation = hs.get_federation_sender()
 
-        self._send_federation = hs.should_send_federation()
-
         self._federation_queue = PresenceFederationQueue(hs, self)
 
         self._busy_presence_enabled = hs.config.experimental.msc3026_enabled
@@ -277,12 +275,9 @@ async def maybe_send_presence_to_interested_destinations(
         destinations that are interested.
         """
 
-        if not self._send_federation:
+        if not self._federation:
             return
 
-        # If this worker sends federation we must have a FederationSender.
-        assert self._federation
-
         hosts_and_states = await get_interested_remotes(
             self.store,
             self.presence_router,