code: func removeTxtEntryFromZone(zone, relative string) (string, bool) {
  	prefix := fmt.Sprintf("%s TXT 0 ", relative)
  
  	modified := false
  	var zoneEntries []string
  	for _, line := range strings.Split(zone, "\n") {
  		if strings.HasPrefix(line, prefix) {
  			modified = true
  			continue
  		}
  		zoneEntries = append(zoneEntries, line)
  	}
  
  	return strings.TrimSpace(strings.Join(zoneEntries, "\n")), modified
  }
docs: // removeTxtEntryFromZone clean-ups all TXT records with given name