focused_stackexchanges.js

// ==UserScript==
// @name         Focused StackExchanges
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Remove distracting things (hot network questions) from StackExchange pages
// @author       Nathan Hunt
// @match        https://stackoverflow.com/*
// @match        https://*.stackexchange.com/*
// @match        https://superuser.com
// @grant        none
// ==/UserScript==

// GitHub gist link: https://gist.github.com/neighthan/2ecea8746b7e9b2c277c4a7d15232397

(function() {
    'use strict'

    let delay = 1000

    let waitAndHide = function(id) {
        setTimeout(function () {
            let element = document.getElementById(id)
            console.log(`Trying to hide ${id} (${element}).`)
            if (element) {
                element.style.display = 'none'
            } else {
                waitAndHide(id)
            }
        }, delay)
    }

    waitAndHide('hot-network-questions')
})()