[#67821476] Remove old bootstrap for vCloud

This has now been replaced by gds/pp-pilotis. Should not be merged before
the docs which reference this file have also been merged in:

- https://github.gds/gds/pp-manual/pull/118
Merge pull request #355 from alphagov/67821476-update_provisioning_docs

[#67821476] Remove old bootstrap for vCloud