Exclude expired Event Espresso events from WP SEO (Yoast) plugin's XML Sitemaps

xml_sitemaps.php

<?php
//* Please do NOT include the opening php tag, except of course if you're starting with a blank file

function ee_seo_xml_sitemap_no_expired_events( $url, $type, $post ) {
  if ('espresso_events' == get_post_type( $post ) ){
    $id = $post->ID;
    $event = EEH_Event_View::get_event( $id );
    $status = $event instanceof EE_Event ? $event->get_active_status() : '';
    if ( $status == 'DTE' ) {
    	$url = '';
    }
  }
  return $url;
}
add_filter( 'wpseo_sitemap_entry', 'ee_seo_xml_sitemap_no_expired_events', 10, 3 );