Remove PMPro Protected Content Messages sitewide

pmpro_no_access_message_html.php

<?php
/**
 * Remove PMPro Protected Content Messages sitewide
 *
 * 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_no_access_message_html', '__return_empty_string' );