Merge branch 'feature/remove-dimensionworld' into 'master'

Remove exported number 'dimensionworld' from the virtual refinement interface

It has been removed from the Geometry interface, so it makes sense
to remove it here too:  After all, the virtual refinement mimic
the Geometry interface.

See merge request !25

dune/geometry/refinement/hcubetriangulation.cc

@@ -68,7 +68,6 @@ namespace Dune
         enum { dimension = dimension_ };
 
         typedef CoordType ctype;
-        enum { dimensionworld = dimension };
 
         template<int codimension>
         struct Codim;

dune/geometry/refinement/prismtriangulation.cc

@@ -68,7 +68,6 @@ namespace Dune
         enum {dimension = dimension_};
 
         typedef CoordType ctype;
-        enum {dimensionworld = dimension};
 
         template<int codimension>
         struct Codim;

dune/geometry/refinement/pyramidtriangulation.cc

@@ -70,7 +70,6 @@ namespace Dune
         enum {dimension = dimension_};
 
         typedef CoordType ctype;
-        enum {dimensionworld = dimension};
 
         template<int codimension>
         struct Codim;

dune/geometry/refinement/simplex.cc

@@ -423,7 +423,6 @@ namespace Dune {
       public:
         enum { dimension = dimension_ };
         typedef CoordType ctype;
-        enum { dimensionworld = dimension };
 
         template<int codimension>
         struct Codim;