How to Hide Yawave Admin Menus

function plt_hide_yawave_menus() {
	//Hide "Publications".
	remove_menu_page('edit.php?post_type=publication');
	//Hide "Publications → All Items".
	remove_submenu_page('edit.php?post_type=publication', 'edit.php?post_type=publication');
	//Hide "Publications → Add New Post".
	remove_submenu_page('edit.php?post_type=publication', 'post-new.php?post_type=publication');
	//Hide "Publications → Categories".
	remove_submenu_page('edit.php?post_type=publication', 'edit-tags.php?taxonomy=category&post_type=publication');
	//Hide "Publications → Tags".
	remove_submenu_page('edit.php?post_type=publication', 'edit-tags.php?taxonomy=post_tag&post_type=publication');
	//Hide "Publications → Portals".
	remove_submenu_page('edit.php?post_type=publication', 'edit-tags.php?taxonomy=portal&post_type=publication');
	//Hide "Publications → Types".
	remove_submenu_page('edit.php?post_type=publication', 'edit-tags.php?taxonomy=media_type&post_type=publication');

	//Hide "Yawave".
	remove_menu_page('yawave-setting-admin');
	//Hide "Yawave → Settings".
	remove_submenu_page('yawave-setting-admin', 'yawave-setting-admin');
	//Hide "Yawave → Liveblogs".
	remove_submenu_page('yawave-setting-admin', 'yawave-setting-admin-liveblog');
}

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

Where do I put this code?