polylogarithmic debodge

Signed-off-by: Jason Volk <jason@zemos.net>

src/service/rooms/event_handler/mod.rs

@@ -538,10 +538,8 @@ impl Service {
 		// Remove any forward extremities that are referenced by this incoming event's
 		// prev_events
 		for prev_event in &incoming_pdu.prev_events {
-			if extremities.contains(prev_event) {
 			extremities.remove(prev_event);
 		}
-		}
 
 		// Only keep those extremities were not referenced yet
 		extremities.retain(|id| {