Target recurse-fuzz depends on pc-bios/optionrom/fuzz, which can't be
made.  It's not used anywhere.  Added in commit c621dc3e, looks
like cargo cult.  Delete.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200424071142.3525-2-armbru@redhat.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>