WordPress Disable Emojis DNS Prefetch

utils.php

<?php 
/**
 * Disable Emojis DNS Prefetch
 * @return string
 */
add_filter( 'wp_resource_hints', 'disable_emojis_dns_prefetch', 10, 2);
function disable_emojis_dns_prefetch( $urls, $relation_type ) {
  if ( 'dns-prefetch' == $relation_type ) {
    $emoji_svg_url = apply_filters( 'emoji_svg_url', 'https://s.w.org/images/core/emoji/2.2.1/svg/' );
    $urls		  = array_diff( $urls, array( $emoji_svg_url ) );
  }
  return $urls;
}