message: Remove some superfluous logging from tperf.
  Summary: I don't think this is very useful logging.
diff: @@ -367,11 +367,9 @@ class TPerfClient : public quic::QuicSocket::ConnectionCallback,
  }
  void readError(
  - quic::StreamId streamId,
  + quic::StreamId /*streamId*/,
  std::pair<quic::QuicErrorCode, folly::Optional<folly::StringPiece>>
  - error) noexcept override {
  - LOG(ERROR) << "TPerfClient failed read from stream=" << streamId
  - << ", error=" << toString(error);
  + /*error*/) noexcept override {
  // A read error only terminates the ingress portion of the stream state.
  // Your application should probably terminate the egress portion via
  // resetStream
  