flake8: Remove the bottle [Linux]
flake8: Remove the bottle [Linux]

Fix the error:
pkg_resources.DistributionNotFound: The 'flake8==3.5.0' distribution
was not found and is required by the application

maxim-belkin/homebrew-core,rwhogg/homebrew-core,LinuxbrewTestBot/homebrew-core,rwhogg/homebrew-core,Linuxbrew/homebrew-core,LinuxbrewTestBot/homebrew-core,maxim-belkin/homebrew-core,Linuxbrew/homebrew-core