CI stuff failing

[Hal Murray]

Matthew.Selsky at twosigma.com said:
> Let's remove this CI target. There's no need to test a specific version
> of AsciiDoc 3 on every commit. 

What's interesting about the 3?   Are some of the other tests also testing 
plain old asciidoc?

James' fix worked so things are back to normal.  Do we want to cleanup the 
CI stuff before or after the release?

There are 2 other .gitlab-ci files.  They get included by .gitlab-ci.yml 
but they don't get used, at least by the normal CI process that I pay 
attention to.
  .gitlab-opttest-ci.yml
  .gitlab-docker-ci.yml



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