Deprecated
Import directly puppeteer.
import { Puppeteer } from "https://deno.land/x/puppeteer@16.2.0/vendor/puppeteer-core/puppeteer/common/Puppeteer.d.ts";
x/puppeteer/vendor/puppeteer-core/puppeteer/common/Puppeteer.d.ts>Puppeteer#unregisterCustomQueryHandler
Import directly puppeteer.
import { Puppeteer } from "https://deno.land/x/puppeteer@16.2.0/vendor/puppeteer-core/puppeteer/common/Puppeteer.d.ts";