ACP2E-1369: clear previous error message if ajax request completed on subsequent try

Author: alzota

lib/web/mage/backend/bootstrap.js

@@ -78,7 +78,6 @@ define([
          * @param {String} textStatus
          */
         error: function (jqXHR, textStatus) {
-
             $('body').notification('clear');
             if (jqXHR.readyState !== 0 && textStatus !== 'abort') {
                 $('body').notification('add', {