message: Remove unsuported parallel mesh vis option
diff: @@ -101,7 +101,6 @@ struct Opt
  bool print = false;
  bool radial = false;
  bool by_vdim = false;
  - bool vis_mesh = false;
  double lambda = 0.1;
  double amr_threshold = 0.6;
  const char *keys = "gAm";
  @@ -241,8 +240,7 @@ public:
  {
  const GridFunction &solution = sol ? *sol : *mesh->GetNodes();
  glvis << "parallel " << opt.sz << " " << opt.id << "\n";
  - if (opt.vis_mesh) { glvis << "mesh\n" << *mesh; }
  - else { glvis << "solution\n" << *mesh << solution; }
  + glvis << "solution\n" << *mesh << solution;
  glvis.precision(8);
  glvis << "window_size " << w << " " << h << "\n";
  glvis << "keys " << opt.keys << "\n";
  @@ -256,8 +254,7 @@ public:
  {
  glvis << "parallel " << opt.sz << " " << opt.id << "\n";
  const GridFunction &solution = sol ? *sol : *mesh->GetNodes();
  - if (opt.vis_mesh) { glvis << "mesh\n" << *mesh; }
  - else { glvis << "solution\n" << *mesh << solution; }
  + glvis << "solution\n" << *mesh << solution;
  if (opt.wait) { glvis << "pause\n"; }
  glvis << std::flush;
  }
  @@ -1300,8 +1297,6 @@ int main(int argc, char *argv[])
  args.AddOption(&opt.keys, "-k", "--keys", "GLVis configuration keys.");
  args.AddOption(&opt.vis, "-vis", "--visualization", "-no-vis",
  "--no-visualization", "Enable or disable visualization.");
  - args.AddOption(&opt.vis_mesh, "-vm", "--vis-mesh", "-no-vm",
  - "--no-vis-mesh", "Enable or disable mesh visualization.");
  args.AddOption(&opt.by_vdim, "-c", "--solve-byvdim",
  "-no-c", "--solve-bynodes",
  "Enable or disable the 'ByVdim' solver");
  @@ -1310,7 +1305,6 @@ int main(int argc, char *argv[])
  args.Parse();
  if (!args.Good()) { args.PrintUsage(mfem::out); MPI_Finalize(); return 1; }
  MFEM_VERIFY(opt.lambda >= 0.0 && opt.lambda <= 1.0,"");
  - MFEM_VERIFY(!opt.vis_mesh, "Option not available in parallel!");
  if (!opt.id) { args.PrintOptions(mfem::out); }
  // Initialize hardware devices
  