fs/debugsfs: remove unnecessary inode->i_private initialization

inode->i_private is promised to be NULL on allocation, no need to set it
explicitly.
Signed-off-by: NYan Hong <clouds.yan@gmail.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

fs/debugfs/inode.c

@@ -59,7 +59,6 @@ static struct inode *debugfs_get_inode(struct super_block *sb, umode_t mode, dev
 		case S_IFDIR:
 			inode->i_op = &simple_dir_inode_operations;
 			inode->i_fop = &simple_dir_operations;
-			inode->i_private = NULL;
 
 			/* directory inodes start off with i_nlink == 2
 			 * (for "." entry) */