src: cleanup unused headers

Node codebase has evolved a lot in the more than 10 years of its
existence. As more features (and code) have been added, changed,
removed, it's sometimes hard to keep track of what gets used and what
not.

This commits attempts to clean some of those potentially left-over
headers using suggestions from  include-what-you-use

Refs: https://github.com/nodejs/node/issues/27531

PR-URL: https://github.com/nodejs/node/pull/30328


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>