native python: stop setting PAR_LAUNCH_TIMESTAMP

Summary:
This messes with cli telemetry

Created from CodeHub with https://fburl.com/edit-in-codehub

Reviewed By: itamaro

Differential Revision: D49275018

fbshipit-source-id: c6f2672f3f532fe865a8afb61e6f84af7a798522

prelude/python/tools/embedded_main.cpp

@@ -55,11 +55,6 @@ int main(int argc, char* argv[]) {
   PyStatus status;
   PyConfig config;
 
-  struct timeval tv;
-  gettimeofday(&tv, nullptr);
-  double current_time = (double)tv.tv_usec / 1000000.0 + tv.tv_sec;
-  setenv("PAR_LAUNCH_TIMESTAMP", std::to_string(current_time).c_str(), true);
-
   PyConfig_InitPythonConfig(&config);
 
   status = PyConfig_SetBytesString(&config, &config.program_name, argv[0]);