code: func (ftp *FTP) Dele(path string) (err error) {
  	if err = ftp.send("DELE %s", path); err != nil {
  		return
  	}
  
  	var line string
  	if line, err = ftp.receive(); err != nil {
  		return
  	}
  
  	if !strings.HasPrefix(line, StatusActionOK) {
  		return errors.New(line)
  	}
  
  	return
  }
docs: // Dele deletes path on remote host