kou / Zulip: Disable Ctrl-b in compose box

// ==UserScript==
// @name         Zulip: Disable Ctrl-b in compose box
// @namespace    https://openuserjs.org/users/kou
// @version      1.0.1
// @description  Diable Ctrl-b in Zulip compose box
// @author       Kouhei Sutou
// @copyright    2018 Kouhei Sutou <kou@clear-code.com>
// @license      GPL-3.0+
// @include      https://chat.zulip.org/
// @include      https://zulip.*
// @grant        none
// ==/UserScript==

(function() {
  'use strict';

  window.$("#compose-textarea").off("keydown");
})();