В /app/View/Helper/TinyMceHelper.php удаляйте:
tinymce.init({
selector: "textarea.pagesmalltextarea",
plugins: [
"advlist autolink lists link image charmap print preview anchor",
"searchreplace visualblocks code fullscreen",
"insertdatetime media table contextmenu paste responsivefilemanager"
],
toolbar: "insertfile undo redo | styleselect | bold italic | alignle
