Remove references from NDS Labs Workbench from Dataverse guides

[djbrooke]

In #4040, the NDS Workbench is mentioned a few times.

We should consider putting this into the Dataverse Guides, because it's really cool, but we should understand it a bit first.

[pdurbin]

Yes, thanks for opening this issue. I just pushed 43d3844 for #4040 to at least put NDS Labs Workbench on the radar of people who are installing Dataverse. I should follow up with @CCMumma to see if she has tried it yet. @jonc1438 talked about it at https://projects.iq.harvard.edu/dcm2016 and probably elsewhere. The commit above includes a shout out to @craig-willis for adding Dataverse to the workbench!

[pdurbin]

In sprint planning last week @pameyer mentioned that NDS Labs Workbench allows users to spin up Dataverse in the cloud, which is great to know. Also, 43d3844 is now part of pull request #4168 so assuming it get merged, we'll be able to change the title of the issue, since the workbench will already be mentioned. This issue is about revising what was stubbed out after being informed by experience with the workbench.

[pdurbin]

For anyone wanting to pick this up, here's what's written as of 4.8.6: https://github.com/IQSS/dataverse/blob/v4.8.6/doc/sphinx-guides/source/installation/prep.rst#nds-labs-workbench-for-testing-only