util: Remove deprecated Dict, List, Union, Tuple, Optional type hints

[sonic2kk]

Similar to #513, I thought this would be a trickier one to do and we would have a ton of usages, but going slow and by hand, it wasn't so bad :-)

This should be all of the deprecated type hints I think. I did a Find in Files for from typing import and the remaining usages outside of these last few PRs are all valid imports of Any and Callable.

[DavidoTek]

Thanks!

Callable | None

I find it interesting thatit is actually the official notation for the Option type: https://docs.python.org/3/library/stdtypes.html#types-union

I somehow would have expected something like str? from Python, but on the other hand, this is a very simple and unambiguous way to describe it.

"Optional types can be spelled as a union with None: str | None == typing.Optional[str]"