remove dead code

diff --git a/examples/step-50/step-50.cc b/examples/step-50/step-50.cc
index 895ab9257f0d1e8d1f59c69e4c1c929980094a4c..304fce5e5d5f7de49211d8b074b9bc64289f2bea 100644 (file)
--- a/examples/step-50/step-50.cc
+++ b/examples/step-50/step-50.cc
@@ -689,13 +689,10 @@ namespace Step50
     SolverCG<VectorType> coarse_solver(coarse_solver_control);
 
     PreconditionIdentity prec;
-    //  TrilinosWrappers::PreconditionAMG prec;
-    //  prec.initialize(coarse_matrix);
 
     MGCoarseGridIterativeSolver<VectorType,
                                 SolverCG<VectorType>,
                                 MatrixType,
-                                // TrilinosWrappers::PreconditionAMG
                                 PreconditionIdentity>
       coarse_grid_solver(coarse_solver, coarse_matrix, prec);