[#50737821] Remove noop from account purge
[#50737821] Remove noop from account purge

We fixed some false positives highlighted by the noop:

- 528271e, solr.
- 9d8df51, ubuntu.
- 65c2b08, vagrant and vboxadd.

And verified that the remaining accounts should really be purged:

- Humans not listed in `users::groups::govuk_production_access`.
- logstash, for which we no longer use as a "client" installation.
- clamav, which has been removed in [#51886893].

So, do the deed, and stop spamming logs with noop entries.

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet