Remove pymc3 tests until dependency issue resolves
This is a stopgap merge request to allow the tests to pass while we have incompatible versions between pymc3
(3.11.2) and numpy
(1.22.1).
The version of numpy
is required for ligo.skymap
so pinning the version is not an option.
I'll keep an eye on this, but the skip should stop applying by itself as/when new versions are available.