remove document.attachEvent from radio player

Author: drewvolz

source/views/streaming/radio/player.js

@@ -115,12 +115,6 @@ export class StreamPlayer extends React.PureComponent<Props> {
 	        fn();
 	      } else if (document.addEventListener) {
 	        document.addEventListener('DOMContentLoaded', fn);
-	      } else {
-	        document.attachEvent('onreadystatechange', function () {
-	          if (document.readyState !== 'loading') {
-	            fn();
-	          }
-	        });
 	      }
 	    };