function plt_hide_guidant_menus() {
//Hide the "WP Guidant" menu.
remove_menu_page('guidant-dashboard');
//Hide the "WP Guidant → WP Guidant" menu.
remove_submenu_page('guidant-dashboard', 'guidant-dashboard');
//Hide the "WP Guidant → Useful Plugins" menu.
remove_submenu_page('guidant-dashboard', 'guidant-useful-plugins');
}
add_action('admin_menu', 'plt_hide_guidant_menus', 11);