--- a/src/m/nh3000.h	Mon Aug 13 11:18:12 2007 +0200
+++ b/src/m/nh3000.h	Mon Aug 13 11:19:21 2007 +0200
@@ -78,17 +78,3 @@
    code will not be sharable; but that's better than failing completely.  */
 
 #define NO_REMAP
-
-/* Some really obscure 4.2-based systems (like Sequent DYNIX)
- * do not support asynchronous I/O (using SIGIO) on sockets,
- * even though it works fine on tty's.  If you have one of
- * these systems, define the following, and then use it in
- * config.h (or elsewhere) to decide when (not) to use SIGIO.
- *
- * You'd think this would go in an operating-system description file,
- * but since it only occurs on some, but not all, BSD systems, the
- * reasonable place to select for it is in the machine description
- * file.
- */
-
-/* #define NO_SOCK_SIGIO */