No_mousewheel_zoom.user.js

// ==UserScript==
// @name         No mousewheel-zoom
// @namespace    http://github.com/arekolek
// @version      0.1
// @author       Arek Olek
// @match        http://*/*
// @match        https://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    window.onmousewheel = document.onmousewheel = function(e){
        if(e.ctrlKey){
            e.preventDefault();
            e.stopPropagation();
        }
    };
})();