Revert "rangeexpr for GDT spaces"

This reverts commit 6f96536ef3a8385f08341abc7786116aa489c273.

dune/stuff/common/ranges.hh

@@ -33,27 +33,8 @@
 #include <dune/stuff/common/math.hh>
 #include <dune/stuff/fem/namespace.hh>
 
-#if HAVE_DUNE_GDT
-#include <dune/gdt/spaces/interface.hh>
-#endif
-
 namespace Dune {
 
-#if HAVE_DUNE_GDT
-template <class Traits, int codim = 0>
-typename Traits::GridViewType::template Codim<codim>::Iterator begin(const Dune::GDT::SpaceInterface<Traits>& space)
-{
-  return space.grid_view()->template begin<codim>();
-}
-
-template <class Traits, int codim = 0>
-typename Traits::GridViewType::template Codim<codim>::Iterator end(const Dune::GDT::SpaceInterface<Traits>& space)
-{
-  return space.grid_view()->template end<codim>();
-}
-
-#endif
-
 #if HAVE_DUNE_FEM
 
 namespace Fem {