include/linux/kdev_t.h: remove unused huge_valid_dev()

There's no user of huge_valid_dev() any more, so remove it.

No functional change.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/kdev_t.h

@@ -54,11 +54,6 @@ static inline dev_t new_decode_dev(u32 dev)
 	return MKDEV(major, minor);
 }
 
-static inline int huge_valid_dev(dev_t dev)
-{
-	return 1;
-}
-
 static inline u64 huge_encode_dev(dev_t dev)
 {
 	return new_encode_dev(dev);