Drop 'official-ish' support for using Drupal VM to run production servers

[geerlingguy]

As the title says—basically, it was a neat tech demo, and a site like http://prod.drupalvm.com/ is nice to have around... but it's yet-another-thing I have been maintaining for a while. I would rather not maintain it, nor continue paying the extra $5/month in perpetuity just to show off a feature that likely <1% of Drupal VM's users use.

Also, it adds a little weight to some of my decisions about backwards compatibility that I could more readily make if I knew people weren't running Drupal VM's codebase to build secure production environments.

I wouldn't really be taking away much (if any) functionality, but this issue would:

• Make sure that using Drupal VM for prod is labeled as something experimental, and for which you would receive no official support. (This was already the case, but need to be explicit).
• Update my old 'soup to nuts' blog post to mention that this type of usage is not really recommended .
• Delete the prod.drupalvm.com site, archive it's codebase, etc.

[geerlingguy]

Updated the blog post (https://www.jeffgeerling.com/blog/2018/soup-nuts-using-drupal-vm-build-local-and-prod)

[geerlingguy]

Archived the repo: https://github.com/geerlingguy/drupalvm-live

[geerlingguy]

Deleted the live website.

[geerlingguy]

Committed some changes ^