message: Don't need LORSolver permutation anymore
diff: @@ -196,7 +196,6 @@ class LORSolver : public Solver
  protected:
  LORBase *lor;
  bool own_lor = true;
  - bool use_permutation = true;
  SolverType solver;
  mutable Vector px, py;
  public:
  @@ -222,8 +221,6 @@ public:
  /// @brief Create a solver of type @a SolverType using Operator @a op and
  /// arguments @a args.
  - ///
  - /// The object @a lor_ will be used for DOF permutations.
  template <typename... Args>
  LORSolver(const Operator &op, LORBase &lor_, Args&&... args) : solver(args...)
  {
  @@ -249,18 +246,6 @@ public:
  void Mult(const Vector &x, Vector &y) const { solver.Mult(x, y); }
  - /// @brief Enable or disable the DOF permutation (enabled by default).
  - ///
  - /// The corresponding LOR and high-order DOFs may not have the same
  - /// numbering (for example, when using ND or RT spaces), and so a permutation
  - /// is required when applying the LOR solver as a preconditioner for the
  - /// high-order problem. This permutation can be disabled (for example, in
  - /// order to precondition the low-order problem directly).
  - void UsePermutation(bool use_permutation_)
  - {
  - use_permutation = use_permutation_;
  - }
  -
  /// Access the underlying solver.
  SolverType &GetSolver() { return solver; }
  