feat(xmpp) remove clientNode config option

config.js

     // Websocket URL
     // websocket: 'wss://jitsi-meet.example.com/xmpp-websocket',
 
-    // The name of client node advertised in XEP-0115 'c' stanza
-    clientNode: 'http://jitsi.org/jitsimeet',
-
     // The real JID of focus participant - can be overridden here
     // Do not change username - FIXME: Make focus username configurable
     // https://github.com/jitsi/jitsi-meet/issues/7376

react/features/base/config/functions.any.js

             muc: `conference.${url.hostname}`
         },
         bosh: `${baseURL}http-bind`,
-        clientNode: 'https://jitsi.org/jitsi-meet',
         p2p: {
             enabled: true
         }