How to Hide the "🟠 Breadcrumbs Shortcode" Admin Menu

function plt_hide_breadcrumbs_shortcode_menus() {
	//Hide the "Settings → 🟠 Breadcrumbs Shortcode" menu.
	remove_submenu_page('options-general.php', 'breadcrumbs-shortcode');
}

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

Where do I put this code?