message: remove passthrough ctor
diff: @@ -27,10 +27,6 @@ export default class EditHistoryMessage extends React.PureComponent {
  mxEvent: PropTypes.instanceOf(MatrixEvent).isRequired,
  };
  - constructor(props, context) {
  - super(props, context);
  - }
  -
  componentDidMount() {
  pillifyLinks(this.refs.content.children, this.props.mxEvent);
  }
  