code: func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
  	fqdn, _ := dns01.GetRecord(domain, keyAuth)
  
  	zone, err := d.client.GetZone(fqdn)
  	if err != nil {
  		return fmt.Errorf("ClouDNS: %v", err)
  	}
  
  	record, err := d.client.FindTxtRecord(zone.Name, fqdn)
  	if err != nil {
  		return fmt.Errorf("ClouDNS: %v", err)
  	}
  
  	if record == nil {
  		return nil
  	}
  
  	err = d.client.RemoveTxtRecord(record.ID, zone.Name)
  	if err != nil {
  		return fmt.Errorf("ClouDNS: %v", err)
  	}
  	return nil
  }
docs: // CleanUp removes the TXT record matching the specified parameters.