Revert "Merge branch 'hotfix-sphinx-version' into 'master'"

What does this MR do?

This reverts merge request !148 (merged)

Why is this MR needed?

The latest version of Breathe works with Sphinx >= v2.0, but does not work with Sphinx v1.8, which currently causes the pipeline to fail.

Is there something that needs to be double checked?

No.

Can this MR be accepted?

• Pipeline passing

Related issues