[SPARC64]: Kill unused DIE_PAGE_FAULT enum value.

sparc64 got rid of the pagefault notifiers, so the enum value for them
can go away aswell.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/asm-sparc64/kdebug.h

@@ -32,7 +32,6 @@ enum die_val {
 	DIE_TRAP,
 	DIE_TRAP_TL1,
 	DIE_CALL,
-	DIE_PAGE_FAULT,
 };
 
 #endif