fs: Fix syntax errors in comments

Delete the redundant word 'not'.

Link: https://lore.kernel.org/r/20220605125509.14837-1-wangxiang@cdjrlc.com
Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/ext2/inode.c

@@ -1549,7 +1549,7 @@ static int __ext2_write_inode(struct inode *inode, int do_sync)
 	if (IS_ERR(raw_inode))
  		return -EIO;
 
-	/* For fields not not tracking in the in-memory inode,
+	/* For fields not tracking in the in-memory inode,
 	 * initialise them to zero for new inodes. */
 	if (ei->i_state & EXT2_STATE_NEW)
 		memset(raw_inode, 0, EXT2_SB(sb)->s_inode_size);