cephadm-adopt: remove prometheus workaround
cephadm-adopt: remove prometheus workaround

This was fixed by [1][2]

[1] https://tracker.ceph.com/issues/45120
[2] https://github.com/ceph/ceph/commit/252d4b30

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

ceph/ceph-ansible,ceph/ceph-ansible