remove publicapi from frontend boxes
remove publicapi from frontend boxes

Now that publicapi is proxied directly from the frontend loadbalancer to the backend loadbalancer,
the frontend boxes dont need to listen to the publicapi vhost anymore.

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