Remove all god mod hacks from submodules

[craicoverflow]

It was a required temporary hack to migrate packages to sub modules. Now that the initial releases have been completed we can remove this hack.

This will remove the dependency on the root module.

This has been completed for one module already in #243

For further reading on this hack see https://github.com/golang/go/wiki/Modules#is-it-possible-to-add-a-module-to-a-multi-module-repository