remove 51.la code

index.html

@@ -288,6 +288,5 @@ th{display:table-cell;font-weight:bold;text-align:left}
     }, 3000);
 })();
 </script>
-<script type="text/javascript" src="//js.users.51.la/21479029.js"></script>
 </body>
 </html>