remove redundant send

lib/site-ioserver.js

@@ -190,7 +190,6 @@ class SiteIoServer extends Events {
       const channelId = reaction.subject.toString();
 
       await chatService.sendMessage(channelId, 'user-react', payload);
-      session.socket.emit('user-react', payload);
     } catch (error) {
       this.log.error('failed to process reaction', { message, error });
       session.socket.emit('system-message', {