Revert "Merge branch 'master' of https://github.com/fr0stycl34r/gentoo-overlay-tox"

This reverts commit 2ca32ae9d0e1e69c2b8c1ce7034b751e10e053b0, reversing
changes made to 5e0b1cbe459d95930968bab952ad2dcc5c7a0c72.