Remove superfluous Obsolete tag
    
    This was used when eurephia changed the packaging a while ago,
    where the contents of the eurephia-iptables RPM was moved into the
    main eurephia RPM.
    
    Still keeping the Provides tag, to cover if somebody have old
    documentation at hand.  At least for now.
    
    Signed-off-by: David Sommerseth <davids@redhat.com>