message: Clean up debug printf
diff: @@ -44,13 +44,11 @@ static void iterator_end_do (napi_env env, Iterator* iterator, napi_value cb);
  to##Ch_ = new char[to##Sz_ + 1]; \
  napi_get_value_string_utf8(env, from, to##Ch_, to##Sz_ + 1, &to##Sz_); \
  to##Ch_[to##Sz_] = '\0'; \
  - printf("-- LD_STRING_OR_BUFFER_TO_COPY STRING length: %zu content: %s\n", to##Sz_, to##Ch_); \
  } else if (IsBuffer(env, from)) { \
  char* buf = 0; \
  napi_get_buffer_info(env, from, (void **)&buf, &to##Sz_); \
  to##Ch_ = new char[to##Sz_]; \
  memcpy(to##Ch_, buf, to##Sz_); \
  - printf("-- LD_STRING_OR_BUFFER_TO_COPY BUFFER length: %zu content: %s\n", to##Sz_, to##Ch_); \
  }
  /*********************************************************************
  @@ -1714,7 +1712,6 @@ NAPI_METHOD(batch_do) {
  if (!IsObject(env, element)) continue;
  std::string type = StringProperty(env, element, "type");
  - printf("-- Batch element type: %s\n", type.c_str());
  if (type == "del") {
  if (!HasProperty(env, element, "key")) continue;
  