message: Removing obsolete comments.
diff: @@ -122,7 +122,7 @@ private:
  Array2D<double> coef;
  //! Temporary Vectors used to efficiently apply the Mult and MultTranspose methods.
  - mutable BlockVector xblock; // TODO: remove these?
  + mutable BlockVector xblock;
  mutable BlockVector yblock;
  mutable Vector tmp;
  };
  @@ -192,7 +192,7 @@ private:
  Array<Operator *> op;
  //! Temporary Vectors used to efficiently apply the Mult and MultTranspose
  //! methods.
  - mutable BlockVector xblock; // TODO: are these still used?
  + mutable BlockVector xblock;
  mutable BlockVector yblock;
  };
  