fix: revert commented code

Author: salman2013

xmodule/assets/video/public/js/04_video_control.js

@@ -1,7 +1,7 @@
 'use strict';
 
-// import { convert, format, formatFull } from './utils/time.js';
-import * as Time from './utils/time.js';
+import { convert, format, formatFull } from './utils/time.js';
+
 
 // VideoControl module.
 let VideoControl = function(state) {