Remove 'Billing' from 'Billing Address' title in Paid Memberships Pro.

remove_billing_example.php

<?php
/**
 * Copy the function below into your PMPro Customizations plugin - http://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 * This function uses the gettext filter which will change all text occurences of Billing Address to Address in Paid Memberships Pro.
 */
function change_text_billing_pmpro( $translated_text, $text, $domain ) {
        switch ( $translated_text ) {
            case 'Billing Address' :
                $translated_text = __( 'Address', 'paid-memberships-pro' );
                break;
        }
    return $translated_text;
}
add_filter( 'gettext', 'change_text_billing_pmpro', 20, 3 );