问题
I've installed a package using go modules (go get in Go 1.13) and now I want to remove it. In the documentation there is nothing about this and in go get docu neither.
Removing the package from go.mod manually doesn't solve the issue so it remains in go.sum.
How should I remove a package in a clean why?
回答1:
Found it https://blog.golang.org/using-go-modules#TOC_7.
go mod tidy
So basically, once the package is not being imported in any package you can perform a go mod tidy and it will safely remove the unused depencies.
来源：https://stackoverflow.com/questions/57186705/how-to-remove-an-installed-package-using-go-modules