How to Hide Virtue/Ascend/Pinnacle Toolkit Admin Menus

function plt_hide_virtue_toolkit_menus() {
	//Hide "Portfolio".
	remove_menu_page('edit.php?post_type=portfolio');
	//Hide "Portfolio → All Portfolio".
	remove_submenu_page('edit.php?post_type=portfolio', 'edit.php?post_type=portfolio');
	//Hide "Portfolio → Add New".
	remove_submenu_page('edit.php?post_type=portfolio', 'post-new.php?post_type=portfolio');
	//Hide "Portfolio → Portfolio Type".
	remove_submenu_page('edit.php?post_type=portfolio', 'edit-tags.php?taxonomy=portfolio-type&post_type=portfolio');
}

add_action('admin_menu', 'plt_hide_virtue_toolkit_menus', 15);

Where do I put this code?