remove_bento.user.js

// ==UserScript==
// @name         Remove bento.de stories from spiegel.de
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Remove bento.de stories from spiegel.de
// @author       Michael Otto
// @match        https://www.spiegel.de/*
// @match        http://www.spiegel.de/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var search_string = [
        "//section[@data-area='block>Bento-Box']",         // potential elements with articles
        "//article"
    ];

    function parse_and_remove(xpath) {
        for (var i = 0; i < xpath.snapshotLength; i++) {
            var el = xpath.snapshotItem(i);

            var links = el.getElementsByTagName('a');     // if element contains a link to bento, remove it altogether
            for (var j=0; j < links.length; j++) {
                if (links[j].href.match(/^https?:\/\/(\w+\.)?bento\.de\//i)) {
                    console.log("Removing element with link to "+links[j].href);
                    el.parentNode.removeChild(el);
                    break;
                }
            }
        }
    }

    for (var j = 0; j < search_string.length; j++) {
        parse_and_remove(document.evaluate(search_string[j], document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null));
    }
;})();