[#48724393] Don't remove maint pages
[#48724393] Don't remove maint pages

The maint pages need to be removed in the reverse order that they are
installed. Removing them before Nginx is restarted generates a 404 response,
which is subsequently cached by Varnish. Due to time constraints we won't
remove them automatically. They can be tidied up as a chore [#48916131] later.

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