message: Remove verification
diff: @@ -60,7 +60,6 @@ void PANonlinearForm::Mult(const Vector &x, Vector &y) const
  Operator &PANonlinearForm::GetGradient(const Vector &x) const
  {
  Grad.Reset(new PANonlinearForm::Gradient(x, *this));
  - if (Grad.Type() != Operator::ANY_TYPE) { MFEM_ABORT("error"); }
  return *Grad.Ptr();
  }
  