Provide function callback when file is dropped

- https://stackoverflow.com/questions/6756583/prevent-browser-from-loading-a-drag-and-dropped-file
-

InvenTree/templates/base.html

@@ -88,17 +88,6 @@ $(document).ready(function () {
      * Ref: static/script/inventree/notification.js
      */
     showCachedAlerts();
-
-    $('#launch-about').click(function() {
-        var modal = $('#modal-about');
-
-        modal.modal({
-            backdrop: 'static',
-            keyboard: 'false',
-        });
-
-        modal.modal('show');
-    });
 });
 </script>