message: remove warning about the number of data reader workers
diff: @@ -110,27 +110,6 @@ void add_input(Input& input, DataReaderParams& reader_params,
  slot_sum += slot_size;
  }
  - if (!repeat_dataset && (format == DataReaderType_t::Norm || format == DataReaderType_t::Parquet)) {
  - std::ifstream train_read_stream(source_data, std::ifstream::in);
  - std::ifstream eval_read_stream(eval_source, std::ifstream::in);
  - if (!train_read_stream.is_open()) {
  - CK_THROW_(Error_t::FileCannotOpen, "file list open failed: " + source_data);
  - }
  - if (!eval_read_stream.is_open()) {
  - CK_THROW_(Error_t::FileCannotOpen, "file list open failed: " + eval_source);
  - }
  - std::string train_buff, eval_buff;
  - std::getline(train_read_stream, train_buff);
  - std::getline(eval_read_stream, eval_buff);
  - int train_num_of_files = std::stoi(train_buff);
  - int eval_num_of_files = std::stoi(eval_buff);
  - if (train_num_of_files % num_workers != 0 || eval_num_of_files % num_workers != 0) {
  - MESSAGE_("WARNING: the number of data reader workers is not a divisor of the number of data files. \
  - In epoch mode, this may cause more than expected batches to be discarded.");
  - }
  - train_read_stream.close();
  - }
  -
  switch (format) {
  case DataReaderType_t::Norm: {
  bool start_right_now = repeat_dataset;
  