UBI: Fastmap: Remove eba_orphans logic

This logic is in vain as we treat protected PEBs also as used, so this
case must not happen.
If a PEB is found which is in the EBA table but not known as used
has to be issued as fatal error.

Signed-off-by: Richard Weinberger <richard@nod.at>
Git-commit: d141a8ef21ab496ab6f8d188dfe7ca33e16fe798
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Nikhilesh Reddy <reddyn@codeaurora.org>