Fix lint errors

www/poll/inner.js

@@ -269,7 +269,6 @@ define([
     var addScrollClass = function () {
         var $scroll = $('#cp-app-poll-table-scroll');
         var hasScroll = $scroll.width() < $scroll[0].scrollWidth && $scroll.width() > 100;
-        var $countCol = $('tr td:last-child');
         if (hasScroll) {
             $scroll.addClass('cp-app-poll-table-scrolled');
             return;

www/poll/render.js

@@ -1,9 +1,10 @@
 define([
     //'/common/cryptpad-common.js',
+    'jquery',
     '/bower_components/hyperjson/hyperjson.js',
     '/bower_components/textpatcher/TextPatcher.js',
     '/bower_components/diff-dom/diffDOM.js',
-], function (Hyperjson, TextPatcher) {
+], function ($, Hyperjson, TextPatcher) {
     var DiffDOM = window.diffDOM;
 
     var Example = {