How to Hide the "GDPR tools: cookies + privacy" Admin Menu

function plt_hide_dsgvo_tools_cookie_hinweis_datenschutz_menus() {
	//Hide the "GDPR tools: cookies + privacy" menu.
	remove_menu_page('fhw_dsgvo_cookies_options');
}

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

Where do I put this code?