spec: remove redundant check.

if not fedora 0%{?fedora} evaluates to 0.

Change-Id: I50e1706e7f8c9b07b6788fbbabf61b40306801c3
Signed-off-by: Mooli Tayer <mtayer@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/34610
Reviewed-by: Dan Kenigsberg <danken@redhat.com>
Reviewed-by: Yaniv Bronhaim <ybronhei@redhat.com>