AC-229: Upgrade and remove tinymce4

- Fix static tests

Author: Rrego6

lib/web/mage/adminhtml/wysiwyg/tiny_mce/plugins/magentowidget/editor_plugin.js

@@ -15,9 +15,8 @@ define([
 
             /**
              * @param {tinymce.Editor} editor - Editor instance that the plugin is initialized in.
-             * @param {String} url - Absolute URL to where the plugin is located.
              */
-            init: function (editor, url) {
+            init: function (editor) {
                 var self = this;
 
                 this.activePlaceholder = null;
@@ -53,7 +52,7 @@ define([
                      * execute openVariablesSlideout for onAction callback
                      */
                     onAction: function () {
-                        editor.execCommand('mceMagentowidget')
+                        editor.execCommand('mceMagentowidget');
                     },
 
                     /**
@@ -76,7 +75,7 @@ define([
                             }
                         });
                     }
-                })
+                });
 
                 // Add a widget placeholder image double click callback
                 editor.on('dblClick', function (e) {