[patch] nuke unused smp_msg_data, smp_src_cpu & smp_msg_id

[David Mosberger]

Patch to remove some declarations that are so dead it's not even funny
anymore.

I believe the MSG_* macros shouldn't be there either, but it looks
like some PPC{,64} and SPARC code may still rely on them.

	--david

diff -Nru a/include/linux/smp.h b/include/linux/smp.h
--- a/include/linux/smp.h	Wed Apr  9 14:49:49 2003
+++ b/include/linux/smp.h	Wed Apr  9 14:49:49 2003
@@ -74,10 +74,6 @@
  */
 extern int smp_threads_ready;
 
-extern volatile unsigned long smp_msg_data;
-extern volatile int smp_src_cpu;
-extern volatile int smp_msg_id;
-
 #define MSG_ALL_BUT_SELF	0x8000	/* Assume <32768 CPU's */
 #define MSG_ALL			0x8001