message: Remove append to log file option
diff: @@ -67,7 +67,7 @@ Measurement::~Measurement()
  try
  {
  ofstream myfile;
  - myfile.open(filePath, ios::out | ios::app);
  + myfile.open(filePath, ios::out);
  unique_ptr<Json::StreamWriter> writer(builder.newStreamWriter());
  if (myfile.is_open())
  {
  