Removes add form meta boxes and tinyMCE buttons.

remove-nf-metaboxs-and-tinymce-buttons.php

<?php if ( ! defined( 'ABSPATH' ) ) exit;

/*
Plugin Name: Remove NF Meta Boxes
Description: Removes add form meta boxes and tinyMCE buttons.
Version: 1.0
Author: Kenny Hall
Author URI: http://kennyinthewild.com
*/

class Remove_NF_Meta_Boxes
{
    public function __construct()
    {
        add_action('init', array( $this, 'custom_remove_meta_box' ) , 10);

        if( ! isset( $_GET['form_id'] ) ){
            add_action('media_buttons_context', array($this, 'remove_form_tinymce_button'), 9990);
        }
    }

    public function custom_remove_meta_box()
    {
        remove_action('add_meta_boxes', 'ninja_forms_add_custom_box');
    }

    public function remove_form_tinymce_button()
    {
        remove_filter('media_buttons_context', array('NF_Admin_AddFormModel', 'insert_form_tinymce_buttons'), 9999);
    }
}

return new Remove_NF_Meta_Boxes();