message: Update Argument.js
  No shouldComponentUpdate
diff: @@ -15,11 +15,6 @@ export default class Argument extends React.Component {
  onClickType: PropTypes.func.isRequired,
  }
  - shouldComponentUpdate(nextProps) {
  - return this.props.arg !== nextProps.arg ||
  - this.props.onClickType !== nextProps.onClickType;
  - }
  -
  render() {
  const arg = this.props.arg;
  