removed obsolete declarations of UGGridLevelIteratorFactory

[[Imported from SVN: r4390]]

grid/uggrid/uggridleveliterator.hh

@@ -11,10 +11,6 @@
 
 namespace Dune {
 
-  // Forward declaration
-  template <int codim, PartitionIteratorType PiType, class GridImp>
-  class UGGridLevelIteratorFactory;
-
   //**********************************************************************
   //
   // --UGGridLevelIterator
@@ -32,9 +28,6 @@ namespace Dune {
     friend class UGGridEntity<codim,GridImp::dimension,GridImp>;
     friend class UGGridEntity<0,    GridImp::dimension,GridImp>;
 
-    template <int codim_, PartitionIteratorType PiType_, class GridImp_>
-    friend class UGGridLevelIteratorFactory;
-
   public:
 
     typedef typename GridImp::template Codim<codim>::Entity Entity;