Remove unnecessary dependencies

[jwoloch]

Having golangci-lint and witch imported in tools.go generates awful number of dependencies that are not required at all for this library to work. Maybe we could remove it?

[jwoloch]

I see that there was similar PR #70, but still having read that conversation I would like to reopen this discussion. Currently importing this library into my project more then doubles number of dependencies :/

For example, current way of installing golangci-lint is discouraged by authors: https://golangci-lint.run/usage/install/#install-from-source

[F21]

Thanks for opening this. I agree that the transitive dependencies introduced by the development dependencies pollutes the actual dependency tree of the project.

There's some discussion in golang/go#48429 (comment) regarding support for pinning development dependencies, but it is unclear what the implementation timeline would look like in the near-term.

I've been thinking about removing witch from the project as I personally don't use it all that often now and the project appears to be unmaintained. For golang-ci-lint, I think a good workaround would be to download the binary in the makefile and remove it from go.mod until a better solution is available.