cephadm-adopt: remove nfs pool and namespace
cephadm-adopt: remove nfs pool and namespace

This has been removed from the code (orch apply name).
The default pool name is now .nfs

Signed-off-by: Dimitri Savineau <a50a620e679eed14f4e99998b821cea8884cf228@redhat.com>

ceph/ceph-ansible,ceph/ceph-ansible