Delete "Passing kwargs inside a function to another function section"

[yangdanny97]

The context is in example 2 from https://github.com/python/typing/pull/1918

It doesn't make sense to enforce this requirement for just **kwargs but not any other arguments annotated with a TypedDict, and additionally, no typecheckers currently implement this.

It seems like https://discuss.python.org/t/typing-spec-inconsistency-for-unpacking-typed-dict-kwargs/79640 didn't get any responses. I'll bump the discussion again but for now I'll make a PR here so I don't forget about it.