Phantom jobs in CI tests

[jbscoggi]

In recent PRs, I've noticed that 4 checks are never run. Even more odd is that I can't find these jobs anywhere in the .github/workflow files. In particular these are:

• build_linux (ubuntu-16.04, Debug, clang clang++)
• build_linux (ubuntu-16.04, Debug, gcc g++)
• build_linux (ubuntu-16.04, Release, clang clang++)
• build_linux (ubuntu-16.04, Release, gcc g++)

Beyond just being weird, it stops automatically merging because not all checks can pass (since they are never run). As an example, take a look at recent PRs, including #186. @rdbisme, perhaps you have an idea of what's happening?

[rdbisme]

Ehi @jbscoggi. I think it's a bug of Github Actions: https://github.community/t/is-there-a-way-to-delete-or-hide-old-renamed-workflows/16281/35

[rdbisme]

Oh wait, this looks related

[rdbisme]

Fixed! :)

[jbscoggi]

Thanks @rdbisme!