xfs: remove duplicated include from xfs_buf_item.c

Remove duplicated include.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>

fs/xfs/xfs_buf_item.c

@@ -19,7 +19,6 @@
 #include "xfs_quota.h"
 #include "xfs_dquot_item.h"
 #include "xfs_dquot.h"
-#include "xfs_trans_priv.h"
 #include "xfs_trace.h"
 #include "xfs_log.h"