How to Hide Debug Suite Admin Menus

function plt_hide_debug_suite_menus() {
	//Hide "Debug Suite".
	remove_menu_page('debug-suite');
	//Hide "Debug Suite → Overview".
	remove_submenu_page('debug-suite', 'admin.php?page=debug-suite#');
	//Hide "Debug Suite → Features".
	remove_submenu_page('debug-suite', 'admin.php?page=debug-suite#feature');
	//Hide "Debug Suite → Settings".
	remove_submenu_page('debug-suite', 'admin.php?page=debug-suite#settings');
}

add_action('admin_menu', 'plt_hide_debug_suite_menus', 11);

Where do I put this code?