stubtest is failing for mock

[Akuli]

https://github.com/python/typeshed/runs/4622929362?check_suite_focus=true

[srittau]

Interesting, there has been no new release. Maybe we could just remove mock as all supported Python 3 include unittest.mock, of which this is a backport. For Python 2, types-mock 4.0.4 is still available.

[srittau]

Actually, this does not support Python 2.

[srittau]

And it offers features from newer Python versions to older ones, although I'm not sure there have been many improvements to unittest.mock since 3.6.

[srittau]

I'll work on a fix.

[hauntsaninja]

(Probably just from the 0.930 upgrade? CI has third party git skipping logic)

[srittau]

The problem is that stubtest fails after the first failing distribution. Will fix.