Remove Octicons

octigones.user.js

// ==UserScript==
// @name Octigones
// @namespace https://github.com
// @include https://github.com/*
// @description A GitHub beautifier.
// ==/UserScript==

var JQUERY_URL = 'http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js',
    $;

addJQuery(letsJQuery);

// Add jQuery
function addJQuery(callback) {
    var script = document.createElement('script');

    script.setAttribute('src', JQUERY_URL);

    script.addEventListener('load', function() {
        var script = document.createElement('script');
        script.textContent = '(' + callback.toString() + ')();';
        document.body.appendChild(script);
    }, false);

    document.body.appendChild(script);
}

// All your JQuery code must be inside this function
function letsJQuery() {

    $('head').append('                      \
        <style type="text/css">             \
            .icon, .mini-icon, .mega-icon { \
                display: none !important;   \
            }                               \
        </style>                            \
    ');
}