function plt_hide_ays_facebook_popup_likebox_menus() {
//Hide the "Facebook Popup Likebox" menu.
remove_menu_page('ays-facebook-popup-likebox');
//Hide the "Settings → Facebook Popup Likebox" menu.
remove_submenu_page('options-general.php', 'ays-facebook-popup-likebox');
}
add_action('admin_menu', 'plt_hide_ays_facebook_popup_likebox_menus', 11);