How to Hide the "News-Ticker-Benaceur" Admin Menu

function plt_hide_news_ticker_benaceur_menus() {
	//Hide the "Settings → News-Ticker-Benaceur" menu.
	remove_submenu_page('options-general.php', 'news_ticker_benaceur');
}

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

Where do I put this code?