Remove obsolete uses of `typing.*`

[shsms]

Oh, interesting that you can use type as a generic type, maybe you should replace the other Type uses?

Originally posted by @leandro-lucarella-frequenz in #422 (comment)

[llucax]

I want to eventually add pyupgrade to repo-config, which should do this automatically: https://github.com/asottile/pyupgrade#pep-585-typing-rewrites

I guess this is a motivation to do it sooner than later, will probably be more worth investing the time in integrating pyupgrade than in fixing it manually :)