It's not used now. Remove it.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
 fs/fs-writeback.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 08a1993ab7fd..b91284cc39c5 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -1345,8 +1345,6 @@ static bool inode_dirtied_after(struct inode *inode, unsigned long t)
 	return ret;
 }
 
-#define EXPIRE_DIRTY_ATIME 0x0001
-
 /*
  * Move expired (dirtied before dirtied_before) dirty inodes from
  * @delaying_queue to @dispatch_queue.
-- 
2.23.0