Function measure_time_omp

check/TestHighsParallel.cpp:171–176

}
#if 0
std::chrono::microseconds measure_time_omp(unsigned num_threads) {
  auto beg = std::chrono::high_resolution_clock::now();
  matrix_multiplication_omp(num_threads);
  auto end = std::chrono::high_resolution_clock::now();
  return std::chrono::duration_cast<std::chrono::microseconds>(end - beg);
}
#endif
std::chrono::microseconds measure_time_highs(unsigned num_threads) {
  auto beg = std::chrono::high_resolution_clock::now();