woocommerce-delete-customer-ip.php

<?php
/**
 * Snippet for deleting the customer IP address from WooCommerce orders.
 * Important for Trusted Shops® certificates in Germany.
 */
add_action( 'woocommerce_checkout_update_order_meta', 'mp1401091554', 1 );
function mp1401091554( $order_id ) {
	update_post_meta(
		$order_id,
		'_customer_ip_address',
		0
	);
}