[PATCH -next] ufs: remove set but not used variable 'usb3'

[YueHaibing]

Fixes gcc '-Wunused-but-set-variable' warning:

fs/ufs/super.c: In function ufs_statfs:
fs/ufs/super.c:1409:32: warning: variable usb3 set but not used [-Wunused-but-set-variable]

It is not used since commmit c596961d1b4c ("ufs: fix s_size/s_dsize users")

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 fs/ufs/super.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 3d247c0d92aa..4ed0dca52ec8 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -1407,11 +1407,9 @@ static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	struct super_block *sb = dentry->d_sb;
 	struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
 	unsigned  flags = UFS_SB(sb)->s_flags;
-	struct ufs_super_block_third *usb3;
 	u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
 
 	mutex_lock(&UFS_SB(sb)->s_lock);
-	usb3 = ubh_get_usb_third(uspi);
 	
 	if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
 		buf->f_type = UFS2_MAGIC;
-- 
2.17.1