Hide the Discover section in >= 1012px view

github-no-discover.user.js

// ==UserScript==
// @name         No Discover
// @homepage     https://gist.github.com/Tatsh/d1b5a039d6f511c95a08daade8b07a81
// @namespace    https://tat.sh
// @version      0.0.5
// @description  Hide the Discover section in >= 1012px view.
// @author       Tatsh
// @match        https://github.com
// @grant        none
// @run-at       document-end
// @updateURL    https://gist.github.com/Tatsh/d1b5a039d6f511c95a08daade8b07a81/raw/github-no-discover.user.js
// @downloadURL  https://gist.github.com/Tatsh/d1b5a039d6f511c95a08daade8b07a81/raw/github-no-discover.user.js
// @supportURL   https://tat.sh
// @noframes
// ==/UserScript==

(function() {
    'use strict';
    var style = document.createElement("style");
    style.setAttribute('media', '(min-width: 1012px)');
    style.appendChild(document.createTextNode(""));
    document.head.appendChild(style);
    style.sheet.insertRule('aside[aria-label="Explore"] { display: none; }', 0);
    style.sheet.insertRule('body > div.application-main > div > div { width: 75%; }', 1);
})();