Removes the JS code that prevents multiple outgoing call

doc/example/example.js

  * That function is called when connection is established successfully
  */
 function onConnectionSuccess(){
-    room = connection.initJitsiConference("conference10", confOptions);
+    room = connection.initJitsiConference("conference11", confOptions);
     room.on(JitsiMeetJS.events.conference.TRACK_ADDED, onRemoteTrack);
     room.on(JitsiMeetJS.events.conference.TRACK_REMOVED, function (track) {
         console.log("track removed!!!" + track);

modules/xmpp/strophe.rayo.js

             dial: function (to, from, roomName, roomPass, focusMucJid) {
                 var self = this;
                 return new Promise(function (resolve, reject) {
-                    if(self.call_resource) {
-                        reject(new Error("There is already started call!"));
-                        return;
-                    }
                     if(!focusMucJid) {
                         reject(new Error("Internal error!"));
                         return;