fs/affs: remove reference to affs_parent_ino()

Patch series "make FS exportable plus some clean-up", v7.

This small patchset makes AFFS work with NFS for standard operations.

THis patch (of 7):

affs_parent_ino() was removed a long time ago.

Link: http://lkml.kernel.org/r/20170109191208.6085-2-fabf@skynet.be
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/affs/affs.h

@@ -178,7 +178,6 @@ extern int	affs_rename(struct inode *old_dir, struct dentry *old_dentry,
 
 /* inode.c */
 
-extern unsigned long		 affs_parent_ino(struct inode *dir);
 extern struct inode		*affs_new_inode(struct inode *dir);
 extern int			 affs_notify_change(struct dentry *dentry, struct iattr *attr);
 extern void			 affs_evict_inode(struct inode *inode);