Remove unnecessary header includes.

diff --git a/examples/step-15/step-15.cc b/examples/step-15/step-15.cc
index eeab634d80074057346dcb1f14bbb788340ead67..a7a6749949068a6a37fb8ca0e4af04840b9760bf 100644 (file)
--- a/examples/step-15/step-15.cc
+++ b/examples/step-15/step-15.cc
@@ -24,7 +24,6 @@
 // thus not be further commented on.
 #include <deal.II/base/quadrature_lib.h>
 #include <deal.II/base/function.h>
-#include <deal.II/base/logstream.h>
 #include <deal.II/base/utilities.h>
 
 #include <deal.II/lac/vector.h>
@@ -37,7 +36,6 @@
 
 #include <deal.II/grid/tria.h>
 #include <deal.II/grid/grid_generator.h>
-#include <deal.II/grid/manifold_lib.h>
 #include <deal.II/grid/grid_refinement.h>
 
 #include <deal.II/dofs/dof_handler.h>