This is a userscript for tampermonkey to automatically remove a bunch of urls from google.

userscript.js

// ==UserScript==
// @name         Bulk removal google hack
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Bulk remove a search result from google
// @author       Marco Pfeiffer
// @match        https://www.google.com/webmasters/tools/removals*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // search for the site you want to remove using eg. 'site:example.com'
    // configure the search result to render 100 urls per page
    // then run this script in your console:
    // localStorage['removals'] = JSON.stringify([].slice.call(document.querySelectorAll('.r > a[href]')).map(a => a.href).filter(href => href.indexOf("http://example.com") === 0));
    // (adjust the filter for your site; check if all urls are correct)
    // then load https://www.google.com/webmasters/tools/removals?pli=1
    // the local storage queue will be processed.

    let removals = JSON.parse(localStorage.removals);
    if (removals.length > 0) {
        var pollForTextBox = function () {
            var textBox = document.querySelector('input');
            if (!textBox) {
                setTimeout(pollForTextBox, 200);
            } else {
                textBox.value = removals[0];
                document.querySelector('#gwt-uid-28').click();
                pollForRemoval();
            }
        };
        var pollForRemoval = function () {
            var removal = document.querySelector('#gwt-uid-88');
            if (!removal) {
                setTimeout(pollForRemoval, 200);
            } else {
                removal.click();
                pollForOk();
            }
        };
        var pollForOk = function () {
            var ok = document.querySelector('#gwt-uid-96');
            if (!ok) {
                setTimeout(pollForOk, 200);
            } else {
                ok.click();
                // remove that entry from the removals list
                localStorage.removals = JSON.stringify(removals.slice(1));
            }
        };
        pollForTextBox();
    }
})();