Revert "[cmake] use GridUtils to define GRIDTYPE and GRIDDIM"

This reverts commit e90dfa4e46491e1c909995c7dc74bf5f0c68b9a1.

Setting the GRIDTYPE with FORCE does not make any sense of course
(since it overrides any manual change immediately).

CMakeLists.txt

@@ -117,11 +117,8 @@ else(CMAKE_WITH_AUTOTOOLS)
   )
 
   include(DuneUtils)
-  include(GridUtils)
   # configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_config.h.in ${CMAKE_CURRENT_BINARY_DIR}/cmake_config.h )
-  if (ALUGRID_FOUND)
-    set(GRIDTYPE "ALUGRID_CONFORM" CACHE STRING "GRIDTYPE" FORCE)
-  endif (ALUGRID_FOUND)
+
 
   link_directories( "/usr/lib" ${CCGNU_LIBRARY_DIRS} )