Remove unsupported options from Mkdocs project footer

[sahilTakiar]

Details

If this issue is for a specific project or build, include the following:

• Project: http://readthedocs.org/projects/gobblin/
• Build #: latest
• Version: readthedocs
• Documentation: http://gobblin.readthedocs.org/en/readthedocs/

It seems the ReadTheDocs footer is now generated for our project, thanks everyone for the help in #2015 and #2017

Still having a few issues though with the ReadTheDocs footer that is auto-generated:

• The "Downloads" for PDF, HTML, and ePub don't seem to work
  • I did some digging and MkDocs doesn't seem to support these, which is fine, but how do I remove them from the footer so none of our users get confused?
• The "On GitHub" links don't seem to work either, is there I way to manually set them?
  • The "View" links to here https://github.com/linkedin/gobblin/blob/readTheDocs/home/docs/checkouts/readthedocs.org/user_builds/gobblin/checkouts/readthedocs/gobblin-docs/index.md
  • The "Edit" links to here https://github.com/linkedin/gobblin/edit/readTheDocs/home/docs/checkouts/readthedocs.org/user_builds/gobblin/checkouts/readthedocs/gobblin-docs/index.md
  • Neither of these links exist

[agjohnson]

There is no way to currently set these, it should be handled server side. The footer should be altered for mkdocs projects, so I'll triage this as a bug there. We should remove these download options.

The issue with github links is a known issue

[sahilTakiar]

Thanks @agjohnson for the explanation. I went ahead and opened on issue on the MkDocs GitHub Repo: mkdocs/mkdocs#849

[agjohnson]

These changes are strictly in Read the Docs, we need to alter how we are passing the flyout content to mkdocs projects

[stsewd]

Related to #4041

[stsewd]

I don't see the download options for mkdocs projects anymore, only htmlzip (if this option is activated). For the another issue, it's kind of solved, more info in #1820