gistfile1.js

// ==UserScript==
// @name           Kill Uservoice
// @namespace      adam_bachman
// @description    Kill Uservoice Tab
// @include        *
// ==/UserScript==

(function () {
    var uservoice_tab = document.getElementById("uservoice-feedback-tab");
    if (uservoice_tab) {
        uservoice_tab.parentNode.removeChild(uservoice_tab);
    }
})();