[PATCH] kill blk.h

All blk.h users were converted in 2.5, and at the same time blk.h began 
giving a warning.

The patch below removes this obsolete file.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/blk.h

-#warning this file is obsolete, please use <linux/blkdev.h> instead
-#include <linux/blkdev.h>