How to Hide the "Yandex Metrika" Admin Menu

function plt_hide_yandex_metrika_menus() {
	//Hide the "Settings → Yandex Metrika" menu.
	remove_submenu_page('options-general.php', 'yandex-metrika');
}

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

Where do I put this code?