How to Hide Cool Portfolio Admin Menus

function plt_hide_cool_portfolio_menus() {
	//Hide "Portfolios".
	remove_menu_page('edit.php?post_type=coolportfolio');
	//Hide "Portfolios → All Portfolios".
	remove_submenu_page('edit.php?post_type=coolportfolio', 'edit.php?post_type=coolportfolio');
	//Hide "Portfolios → Add New Portfolio".
	remove_submenu_page('edit.php?post_type=coolportfolio', 'post-new.php?post_type=coolportfolio');
	//Hide "Portfolios → Genre".
	remove_submenu_page('edit.php?post_type=coolportfolio', 'edit-tags.php?taxonomy=genre&post_type=coolportfolio');
}

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

Where do I put this code?