sparc: drop get_tbr() in traps.h

get_tbr() has no users in the whole tree -drop it.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/include/asm/traps.h

@@ -22,13 +22,6 @@ struct tt_entry {
 /* We set this to _start in system setup. */
 extern struct tt_entry *sparc_ttable;
 
-static inline unsigned long get_tbr(void)
-{
-	unsigned long tbr;
-
-	__asm__ __volatile__("rd %%tbr, %0\n\t" : "=r" (tbr));
-	return tbr;
-}
 #endif /* (__KERNEL__) */
 #endif /* !(__ASSEMBLY__) */