remove qq upload loading gif, just 404's atm and is not missed

services/web/public/stylesheets/components/fineupload.less

@@ -84,7 +84,6 @@
 }
 .qq-upload-spinner {
     display: inline-block;
-    background: url("loading.gif");
     width: 15px;
     height: 15px;
     vertical-align: text-bottom;