message: hide thread info when there are 0 replies
diff: @@ -521,7 +521,7 @@ export default class EventTile extends React.Component<IProps, IState> {
  const thread = this.state.thread;
  const room = MatrixClientPeg.get().getRoom(this.props.mxEvent.getRoomId());
  - if (!thread || this.props.showThreadInfo === false) {
  + if (!thread || this.props.showThreadInfo === false || thread.length <= 1) {
  return null;
  }
  