Method clearPresolve

highs/lp_data/Highs.cpp:3903–3907

}

void Highs::clearPresolve() {
  model_presolve_status_ = HighsPresolveStatus::kNotPresolved;
  presolved_model_.clear();
  presolve_.clear();
}

void Highs::clearStandardFormLp() {
  standard_form_valid_ = false;