[PATCH -next] mm/fs: remove variable bdi set but not used

[Yang Li <yang.lee@linux.alibaba.com>]

The code that uses the pointer 'bdi' has been removed in commit:
'37c32ade079f000c8e539730f254b14fae0d3b49' and inode_to_bdi() doesn't
change 'inode', so the declaration and assignment of 'bdi' can be removed.

Eliminate the following clang warning:
fs/ext2/ialloc.c:173:27: warning: variable 'bdi' set but not used

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
---
 fs/ext2/ialloc.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index d632764da240..998dd2ac8008 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -170,9 +170,6 @@ static void ext2_preread_inode(struct inode *inode)
 	unsigned long offset;
 	unsigned long block;
 	struct ext2_group_desc * gdp;
-	struct backing_dev_info *bdi;
-
-	bdi = inode_to_bdi(inode);
 
 	block_group = (inode->i_ino - 1) / EXT2_INODES_PER_GROUP(inode->i_sb);
 	gdp = ext2_get_group_desc(inode->i_sb, block_group, NULL);
-- 
2.20.1.7.g153144c