Revert "Updated for loop to range-based."

This reverts commit 8fbcaa5.

Author: pbehne

src/mesh/mesh_smoother_laplace.C

@@ -57,7 +57,7 @@ void LaplaceMeshSmoother::smooth() {
  // determined. We store the new positions here
  std::vector<Point> new_positions;
 
- for (const auto n : make_range(_n_iterations))
+ for (unsigned int n=0; n<_n_iterations; n++)
  {
  new_positions.resize(_mesh.max_node_id());