Minor fixes for jitsi-meet-new

* use proper context for the function
* remove duplicate line

modules/UI/videolayout/LargeVideo.js

 
     get id () {
         return getStreamOwnerId(this.stream);
-        return getStreamId(this.stream);
     }
 
     constructor (onPlay) {

modules/UI/videolayout/VideoLayout.js

         var updateLargeVideo = false;
 
         // Handle LastN/local LastN changes.
-        BottomToolbar.getThumbs().each(function( index, element ) {
+        BottomToolbar.getThumbs().each(( index, element ) => {
             var resourceJid = getPeerContainerResourceId(element);
 
             // We do not want to process any logic for our own(local) video