Revert "Minor tweak to development manifest"
Revert "Minor tweak to development manifest"

This reverts commit 5dba15f627e09a5395e98defa8c5846010652939.

This conflicts with 65c2b08:
```
Duplicate declaration: User[vagrant] is already declared in file /var/govuk/puppet/modules/users/manifests/init.pp at line 17; cannot redeclare at /var/govuk/puppet/modules/govuk/manifests/node/s_development.pp:85 on node vm.dmz.gds
```

Nick can't remember why this was added - we can't think of a case where
s_development is used outside of a Vagrant basebox - and, paraphrasing, "that
fool committed it without an explanation".

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