Isort preparations (#16555)

* Don't treat typing as an "in-between" module for import order

That was a < 3.5 era thing.

* Tighten scope of some pylint unused-import disables

To avoid isort moving a top level one around, undesirably broadening its
scope.

homeassistant/util/package.py

@@ -4,7 +4,6 @@ import logging
 import os
 from subprocess import PIPE, Popen
 import sys
-
 from typing import Optional
 
 _LOGGER = logging.getLogger(__name__)