CMake: Remove more HAVE_MESA references

dtool/LocalSetup.cmake

@@ -279,12 +279,6 @@ else()
   message("- Did not find X11")
 endif()
 
-if(HAVE_MESA)
-  message("+ Mesa")
-else()
-  message("- Did not find Mesa")
-endif()
-
 if(HAVE_OPENCV)
   message("+ OpenCV")
 else()

dtool/dtool_config.h.in

@@ -135,14 +135,6 @@
 /* Define if we have AWESOMIUM installed and want to build for AWESOMIUM.  */
 #cmakedefine HAVE_AWESOMIUM
 
-/* Define if we have Mesa installed and want to build mesadisplay.  */
-#cmakedefine HAVE_MESA
-#cmakedefine MESA_MGL
-#if HAVE_MESA
-#cmakedefine MIN_MESA_VERSION_MAJOR
-#cmakedefine MIN_MESA_VERSION_MINOR
-#endif
-
 /* Define if we have GLX installed and want to build for GLX.  */
 #cmakedefine HAVE_GLX