remove ratelimt()

It mistakenly assumes that a static local in an inlined function is a
kernel-wide singleton.  It also has no callers, so let's remove it.

Cc: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/ratelimit.h

@@ -17,11 +17,4 @@ struct ratelimit_state {
 		struct ratelimit_state name = {interval, burst,}
 
 extern int __ratelimit(struct ratelimit_state *rs);
-
-static inline int ratelimit(void)
-{
-	static DEFINE_RATELIMIT_STATE(rs, DEFAULT_RATELIMIT_INTERVAL,
-					DEFAULT_RATELIMIT_BURST);
-	return __ratelimit(&rs);
-}
 #endif