function plt_hide_unyson_menus() {
//Hide the "Unyson" menu.
remove_menu_page('fw-extensions');
//Hide the "Unyson → Unyson" menu.
remove_submenu_page('fw-extensions', 'fw-extensions');
//Hide the "Unyson → New" menu.
remove_submenu_page('fw-extensions', 'fw-new');
}
add_action('admin_menu', 'plt_hide_unyson_menus', 11);