removed remote_url for polyfill

Author: avonville

includes/admin/class-form-builder-assets.php

@@ -210,14 +210,6 @@ public function get_vue_routes() {
      */
     public function builder_mixins_script() {
         ?>
-            <script>
-                if (!window.Promise) {
-                    var promise_polyfill = document.createElement('script');
-                    promise_polyfill.setAttribute('src','https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?version=4.8.0');
-                    document.head.appendChild(promise_polyfill);
-                }
-            </script>
-
             <script>
                 var wpuf_form_builder_mixins = function(mixins, mixin_parent) {
                     if (!mixins || !mixins.length) {