Remove edk2 dependency on arm (32 bit) (RHBZ#2329331)
    
    Turn it into 'Obsoletes' so edk2-arm is actually uninstalled, because
    of concerns for CVEs in this package.
    
    Fixes: https://src.fedoraproject.org/rpms/qemu/pull-request/73
    Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2329331
    Signed-off-by: Richard W.M. Jones <rjones@redhat.com>