Nothing depends on pth anymore.
Nothing BuildRequires pth-devel anymore.
gnupg2 has changed to using npth.
Also, there has been a strange pull request with the title
``Add CI tests using the standard test interface''
that requires extra packager commitment without touching the package:
https://src.fedoraproject.org/rpms/pth/pull-request/1
I think pth should be retired.
Thoughts?