xfs: header included twice

Header included twice.
Signed-off-by: NNicolas Kaiser <nikai@nikai.net>
Signed-off-by: NAdrian Bunk <bunk@stusta.de>

fs/xfs/xfs_iomap.c

@@ -40,7 +40,6 @@
 #include "xfs_ialloc.h"
 #include "xfs_btree.h"
 #include "xfs_bmap.h"
-#include "xfs_bit.h"
 #include "xfs_rtalloc.h"
 #include "xfs_error.h"
 #include "xfs_itable.h"