Removing unused function die_if_kernel().

From: Jan Beulich <jbeulich@novell.com>

--- 2.6.14/arch/x86_64/kernel/traps.c	2005-10-28 02:02:08.000000000 +0200
+++ 2.6.14-x86_64-die-if-kernel/arch/x86_64/kernel/traps.c	2005-11-07 09:33:53.000000000 +0100
@@ -399,11 +399,6 @@ void die(const char * str, struct pt_reg
 	oops_end(flags);
 	do_exit(SIGSEGV); 
 }
-static inline void die_if_kernel(const char * str, struct pt_regs * regs, long err)
-{
-	if (!(regs->eflags & VM_MASK) && (regs->cs == __KERNEL_CS))
-		die(str, regs, err);
-}
 
 void die_nmi(char *str, struct pt_regs *regs)
 {