Don't depend on libvirt-daemon-kvm monolith.
    
    libguestfs usually needs qemu.  However it only requires an emulator
    for the same architecture, not for all architectures.
    libvirt-daemon-kvm pulls in qemu which pulls in emulators for all
    architectures, as well as a bunch of other stuff we don't need at all
    like network interface support and nwfilter.
    
    There are no Fedora TCG-only arches, so drop the conditional section.