[!135] removed unused macro DIM_MAX that conflects with an Alberta macro

Merge branch 'issue/unused_macros_dim_max' into 'master'

ref:staging/dune-uggrid The macros DIM_MAX and DIM_OF_BND_MAX are not used
anywhere and the DIM_MAX macro conflicts with macros from other libraries. So
they are simply removed. The corresponding `#undef DIM_MAX` should be removed
from dune-grid.

See merge request [!135]

  [!135]: gitlab.dune-project.org/staging/dune-uggrid/merge_requests/135

gm/gm.h

@@ -133,10 +133,6 @@ START_UGDIM_NAMESPACE
 
 /** @name Some size parameters */
 /*@{*/
-/** \brief  maximal space dimension                              */
-#define DIM_MAX                                 3
-/** \brief  maximal dimension of boundary surface*/
-#define DIM_OF_BND_MAX                  2
 /** \brief  maximum depth of triangulation               */
 #define MAXLEVEL                                32
 /** \brief  use 5 bits for object identification */

mainpage.doc

@@ -192,10 +192,6 @@ a side on the coarser mesh.
 
 `In file switch.h`
 
-. DIM_MAX - Maximum space dimension (is 3).
-
-. DIM_OF_BND_MAX - Maximum dimension of boundary (is DIM_MAX-1).
-
 . MAXVECTORS - Maximum number of different VECTOR types.
 
 \section REFINEMENT The interface to the grid refinement module
@@ -302,4 +298,4 @@ REFERENCES:
 Structures for Regular Local Mesh Refinement. In: Scientific Computing,
 IMACS, North-Holland, Amsterdam, 1983.
 
- */
\ No newline at end of file
+ */