6136 sysmacros.h unnecessarily polutes the namespace

@@ -75,17 +75,10 @@
 
 #endif /* !_LP64 */
 
 #if !defined(_KERNEL)
 
-/*
- * Undefine sysmacros.h device macros.
- */
-#undef makedev
-#undef major
-#undef minor
-
 extern dev_t makedev(const major_t, const minor_t);
 extern major_t major(const dev_t);
 extern minor_t minor(const dev_t);
 extern dev_t __makedev(const int, const major_t, const minor_t);
 extern major_t __major(const int, const dev_t);