Revert "Silence previously unreported pylint warnings"
Revert "Silence previously unreported pylint warnings"

This reverts commit 9169aeadf5cf9e4fc30cd76ef53c0dff2ec946ef.

Pylint reports different errors on Mac and Linux!

https://github.com/PyCQA/pylint/issues/3489

Put things back to where Mac is a clean report.

hugovk/coveragepy,nedbat/coveragepy,nedbat/coveragepy,nedbat/coveragepy,hugovk/coveragepy,hugovk/coveragepy,nedbat/coveragepy,nedbat/coveragepy,hugovk/coveragepy,hugovk/coveragepy