Remove users that have left GOV.UK
Remove users that have left GOV.UK

These users' manifests were removed in e63fe78; I omitted to remove
these lines as part of that commit.

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