code: func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
  	fqdn, _ := dns01.GetRecord(domain, keyAuth)
  
  	// get the record's unique ID from when we created it
  	d.recordIDsMu.Lock()
  	recordID, ok := d.recordIDs[fqdn]
  	d.recordIDsMu.Unlock()
  	if !ok {
  		return fmt.Errorf("digitalocean: unknown record ID for '%s'", fqdn)
  	}
  
  	err := d.removeTxtRecord(domain, recordID)
  	if err != nil {
  		return fmt.Errorf("digitalocean: %v", err)
  	}
  
  	// Delete record ID from map
  	d.recordIDsMu.Lock()
  	delete(d.recordIDs, fqdn)
  	d.recordIDsMu.Unlock()
  
  	return nil
  }
docs: // CleanUp removes the TXT record matching the specified parameters