Remove our fork of the stdlibs anchor.
Remove our fork of the stdlibs anchor.

We forked anchor from stdlib in b0610acef6 our patch to this was merged
upstream and is in a version of stdlib we use currently.
- https://github.com/puppetlabs/puppetlabs-stdlib/commit/62bcb8fcf0d20fc5ddc41eb4cd5d4cfc6cba4c37
- https://github.com/puppetlabs/puppetlabs-stdlib/pull/78

In fact the last change to anchor.rb upstream is our change.

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