[aur-general] Merge request: flake8-python3 => flake8.

Python3 version is now maintained in the main flake8 package [1], so the other one [2] is redundant. [1]: https://aur.archlinux.org/packages/flake8/ [2]: https://aur.archlinux.org/packages/flake8/ -- Karol "Kenji Takahashi" Woźniak <kenji.sx>