Remove calculators_frontend from the node_class Carrenza hieradata
Remove calculators_frontend from the node_class Carrenza hieradata

As we no longer have the calculators_frontend machine in Carrenza, the
frontend apps are running in AWS.

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