Removed forgotten tests from Grid2D.h

   static constexpr int getMeshDimension() { return 2; };

   template< int EntityDimension,

             typename Config = GridEntityNoStencilStorage >//CrossStencilStorage< 1 > >

             typename Config = GridEntityCrossStencilStorage< 1 > >

   using EntityType = GridEntity< ThisType, EntityDimension, Config >;

   typedef EntityType< getMeshDimension(), GridEntityCrossStencilStorage< 1 > > Cell;

   typedef EntityType< getMeshDimension() - 1, GridEntityNoStencilStorage > Face;

   typedef EntityType< 0 > Vertex;

   // TODO: remove this

   //template< int EntityDimension, 

   //          typename Config = GridEntityNoStencilStorage >//CrossStencilStorage< 1 > >

   //using TestEntityType = tnlTestGridEntity< ThisType, EntityDimension, Config >;

   //typedef TestEntityType< getMeshDimension(), GridEntityCrossStencilStorage< 1 > > TestCell;

   /////

   Grid();

   static String getType();