message: fix parquet datareader incorrect order
diff: @@ -131,7 +131,6 @@ class ParquetDataReaderWorker : public IDataReaderWorker {
  int i = 0;
  for (auto& c : cat_col_names) {
  tmp_col_index.insert(c.index);
  - categorical_idx_parquet_col_.insert(std::make_pair(i, c.index));
  }
  for (auto it = tmp_col_index.begin(); it != tmp_col_index.end(); it++) {
  categorical_idx_parquet_col_.insert(std::make_pair(i, *it));
  