disable comments url | WordPress.org

 
//quitar campo url de comentarios (sniff)
function remove_url_field($fields){
	if(isset($fields['url']))
	unset($fields['url']);
	return $fields;
}
add_filter('comment_form_default_fields', 'remove_url_field');

hello good I have this code and it does not work for comments to disable the url

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