we always have dune-istl, drop guards

dune/gdt/spaces/parallel/communication.hh

@@ -14,9 +14,7 @@
 
 #include <dune/common/parallel/communicator.hh>
 
-#if HAVE_DUNE_ISTL
-#  include <dune/istl/owneroverlapcopy.hh>
-#endif
+#include <dune/istl/owneroverlapcopy.hh>
 
 #include <dune/xt/common/parallel/helper.hh>
 
@@ -46,7 +44,7 @@ struct DofCommunicationChooser
 }; // struct DofCommunicationChooser
 
 
-#if HAVE_MPI && HAVE_DUNE_ISTL
+#if HAVE_MPI
 
 
 template <class ViewImp>
@@ -78,7 +76,7 @@ public:
 }; // struct DofCommunicationChooser< ..., true >
 
 
-#endif // HAVE_MPI && HAVE_DUNE_ISTL
+#endif // HAVE_MPI
 
 } // namespace GDT
 } // namespace Dune

dune/gdt/test/stokes/stokes-taylorhood.hh

@@ -44,7 +44,6 @@ namespace Dune {
 namespace GDT {
 namespace Test {
 
-#if HAVE_DUNE_ISTL
 
 template <class GV>
 struct StokesDirichletProblem
@@ -380,7 +379,6 @@ public:
   }
 }; // struct StokesTestcase1
 
-#endif // HAVE_DUNE_ISTL
 
 } // namespace Test
 } // namespace GDT