code: func (msg *MsgTx) DeserializeNoWitness(r io.Reader) error {
  	return msg.BtcDecode(r, 0, BaseEncoding)
  }
docs: // DeserializeNoWitness decodes a transaction from r into the receiver, where
  // the transaction encoding format within r MUST NOT utilize the new
  // serialization format created to encode transaction bearing witness data
  // within inputs.