[linear] Remove unused function scaleLinearSystem

The implementation had several flaws and was not general enough. If needed
can be reimplemented as a feataure requiest in the future.

dumux/linear/CMakeLists.txt

@@ -8,7 +8,6 @@ linearsolveracceptsmultitypematrix.hh
 matrixconverter.hh
 parallelhelpers.hh
 pdesolver.hh
-scalelinearsystem.hh
 scotchbackend.hh
 seqsolverbackend.hh
 solver.hh

dumux/linear/scalelinearsystem.hh

-// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
-// vi: set et ts=4 sw=4 sts=4:
-/*****************************************************************************
- *   See the file COPYING for full copying permissions.                      *
- *                                                                           *
- *   This program is free software: you can redistribute it and/or modify    *
- *   it under the terms of the GNU General Public License as published by    *
- *   the Free Software Foundation, either version 3 of the License, or       *
- *   (at your option) any later version.                                     *
- *                                                                           *
- *   This program is distributed in the hope that it will be useful,         *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of          *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the            *
- *   GNU General Public License for more details.                            *
- *                                                                           *
- *   You should have received a copy of the GNU General Public License       *
- *   along with this program.  If not, see <http://www.gnu.org/licenses/>.   *
- *****************************************************************************/
-/*!
- * \file
- * \ingroup Linear
- * \brief Free function to scale a linear system
- */
-#ifndef DUMUX_LINEAR_SCALELINEARSYSTEM_HH
-#define DUMUX_LINEAR_SCALELINEARSYSTEM_HH
-
-namespace Dumux {
-
-/*!
- * \ingroup Linear
- * \brief Scale the linear system by the inverse of
- * its (block-)diagonal entries.
- *
- * \param matrix the matrix to scale
- * \param rhs the right hand side vector to scale
- */
-template <class Matrix, class Vector>
-void scaleLinearSystem(Matrix& matrix, Vector& rhs)
-{
-    for (auto rowIt = matrix.begin(); rowIt != matrix.end(); ++rowIt)
-    {
-        auto rowIdx = rowIt.index();
-        auto diagonal = matrix[rowIdx][rowIdx];
-        diagonal.invert();
-
-        const auto b = rhs[rowIdx];
-        diagonal.mv(b, rhs[rowIdx]);
-
-        for (auto& col : *rowIt)
-            col.leftmultiply(diagonal);
-    }
-}
-
-} // end namespace Dumux