network, multus, tests: remove comment
network, multus, tests: remove comment

There is no plan to forcefully rely on `k8s-nmstate` upstream. As
such, let's remove this misleading comment.

Signed-off-by: Miguel Duarte Barroso <c798d3f0e4fda7badfc3bbd91babde7ebd48b6c2@redhat.com>

kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt