Don't schedule kde-live-iso for F32
    
    It seems that building a KDE live on F32 just hangs during nss
    install for some reason. I don't think it's worth investigating
    and fixing as F32 will be EOL soon anyway, so let's just not
    schedule the test.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>