Remove obsolete /send_event replication endpoint. (#18730)

Fixes: #18441

Signed-off-by: Olivier 'reivilibre <oliverw@matrix.org>

Author: reivilibre

changelog.d/18730.misc

@@ -0,0 +1 @@
+Remove obsolete `/send_event` replication endpoint.

synapse/handlers/message.py

@@ -63,7 +63,6 @@
 from synapse.logging import opentracing
 from synapse.logging.context import make_deferred_yieldable, run_in_background
 from synapse.metrics.background_process_metrics import run_as_background_process
-from synapse.replication.http.send_event import ReplicationSendEventRestServlet
 from synapse.replication.http.send_events import ReplicationSendEventsRestServlet
 from synapse.storage.databases.main.events_worker import EventRedactBehaviour
 from synapse.types import (
@@ -501,7 +500,6 @@ def __init__(self, hs: "HomeServer"):
 
         self.room_prejoin_state_types = self.hs.config.api.room_prejoin_state
 
-        self.send_event = ReplicationSendEventRestServlet.make_client(hs)
         self.send_events = ReplicationSendEventsRestServlet.make_client(hs)
 
         self.request_ratelimiter = hs.get_request_ratelimiter()

synapse/replication/http/__init__.py

@@ -31,7 +31,6 @@
     presence,
     push,
     register,
-    send_event,
     send_events,
     state,
     streams,
@@ -50,7 +49,6 @@ def __init__(self, hs: "HomeServer"):
         self.register_servlets(hs)
 
     def register_servlets(self, hs: "HomeServer") -> None:
-        send_event.register_servlets(hs, self)
         send_events.register_servlets(hs, self)
         federation.register_servlets(hs, self)
         presence.register_servlets(hs, self)