ci: Stop layering oci-kvm-hook
ci: Stop layering oci-kvm-hook

Since we're explicitly using `--device /dev/kvm`, there's no need to
install `oci-kvm-hook`.

Closes: #1601
Approved by: cgwalters

GNOME/ostree,GNOME/ostree,GNOME/ostree,GNOME/ostree,GNOME/ostree