How to Hide GDPR WP Admin Menus

function plt_hide_og_gdpr_menus() {
	//Hide the "Settings → GDPR" menu.
	remove_submenu_page('options-general.php', 'og_gdpr_settings');
}

add_action('admin_menu', 'plt_hide_og_gdpr_menus', 10000);

Where do I put this code?