Hide PMPro Billing Address fields

pmpro_hide_billing_address_fields.php

<?php // copy from below.
/**
 * Hide PMPro Billing Address fields. 
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
add_filter( 'pmpro_hide_billing_address_fields', '__return_true' );