zap obsolete glversion.c comment

Author: mohawk2

utils/glversion.c

@@ -15,10 +15,6 @@
 #define OGL_FREEGLUT_VERSION_EXPR -1
 
 #ifdef __APPLE__
-/* NB: not ideal -- this assumes that we always build with AGL interface on Mac OS X
- * Ideally, the flag HAVE_AGL_GLUT should be set appropriately by Makefile.PL when building glversion
- * and used to check here, but this will require substantial changes to the get_extensions() there
- */
 #include <GLUT/glut.h>
 #else
 #include <GL/glut.h>