message: Simplify unnecessary logger message construction (lib)
diff: @@ -5351,9 +5351,6 @@ error Context::pushBatchedChanges(
  }
  }
  - std::stringstream ss;
  - ss << "Sync success (";
  -
  Json::Value request;
  // the conditions should be here so we don't create unnecessary empty JSON items
  @@ -5402,8 +5399,7 @@ error Context::pushBatchedChanges(
  syncHandleResponse(responseJson["time_entries"], time_entries);
  stopwatch.stop();
  - ss << ") Total = " << stopwatch.elapsed() / 1000 << " ms";
  - logger.debug(ss.str());
  + logger.debug("Sync success. Total = ", stopwatch.elapsed() / 1000, " ms");
  } catch(const Poco::Exception& exc) {
  return exc.displayText();
  } catch(const std::exception& ex) {
  