message: removed unwanted debug logs that causes arithmetic exception
diff: @@ -653,7 +653,6 @@ Status Union(CylonContext *ctx,
  const int64_t max = std::max(ltab->num_rows(), rtab->num_rows());
  const int8_t table0 = 0;
  const int8_t table1 = 1;
  - const int64_t print_threshold = max / 10;
  for (int64_t row = 0; row < max; ++row) {
  if (row < ltab->num_rows()) {
  rows_set.insert(std::pair<int8_t, int64_t>(table0, row));
  @@ -662,12 +661,6 @@ Status Union(CylonContext *ctx,
  if (row < rtab->num_rows()) {
  rows_set.insert(std::pair<int8_t, int64_t>(table1, row));
  }
  -
  - if (row % print_threshold == 0) {
  - LOG(INFO) << "Done " << (row + 1) * 100 / max << "%" << " N : "
  - << row << ", Eq : " << eq_calls << ", Hs : "
  - << hash_calls;
  - }
  }
  std::shared_ptr<std::vector<int64_t>> indices_from_tabs[2] = {
  