[PATCH] remove pipe definitions

These no longer have any users.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/pipe_fs_i.h

@@ -39,9 +39,6 @@ struct pipe_inode_info {
 
 #define PIPE_SEM(inode)		(&(inode).i_sem)
 #define PIPE_WAIT(inode)	(&(inode).i_pipe->wait)
-#define PIPE_BASE(inode)	((inode).i_pipe->base)
-#define PIPE_START(inode)	((inode).i_pipe->start)
-#define PIPE_LEN(inode)		((inode).i_pipe->len)
 #define PIPE_READERS(inode)	((inode).i_pipe->readers)
 #define PIPE_WRITERS(inode)	((inode).i_pipe->writers)
 #define PIPE_WAITING_WRITERS(inode)	((inode).i_pipe->waiting_writers)