fix bug removing reactions when there are multiple

d2m/actions/remove-reaction.js

@@ -43,7 +43,9 @@ async function removeReaction(data) {
 			if (!lookingAtMatrixReaction && !wantToRemoveMatrixReaction) {
 				// We are removing a Discord user's reaction, so we just make the sim user remove it.
 				const mxid = select("sim", "mxid", "WHERE discord_id = ?").pluck().get(data.user_id)
-				await api.redactEvent(roomID, event.event_id, mxid)
+				if (mxid === event.sender) {
+					await api.redactEvent(roomID, event.event_id, mxid)
+				}
 			}
 		}
 	}