Reverted appId to the payload.

Author: rennokki

src/Dashboard/Http/Controllers/SendMessage.php

@@ -45,9 +45,6 @@ public function __invoke(Request $request, ChannelManager $channelManager)
                 $request->appId
             );
         } else {
-            // Add 'appId' to the payload.
-            $payload['appId'] = $request->appId;
-
             $channelManager->broadcastAcrossServers(
                 $request->appId, $request->channel, (object) $payload
             );