clean up css / resolve lint issue

bigbluebutton-html5/imports/ui/components/shortcut-help/component.jsx

 import React, { Component } from 'react';
 import { defineMessages, injectIntl } from 'react-intl';
 import Modal from '/imports/ui/components/modal/simple/component';
+import deviceInfo from '/imports/utils/deviceInfo';
 import _ from 'lodash';
 import { styles } from './styles';
-import deviceInfo from '/imports/utils/deviceInfo';
 
 const intlMessages = defineMessages({
   title: {

bigbluebutton-html5/imports/ui/components/shortcut-help/styles.scss

@@ -25,14 +25,3 @@
 .tableTitle {
   padding: $sm-padding-x;
 }
-
-.span {
-  padding-bottom: 10px;
-  text-align: center;
-}
-
-.p {
-  margin-top: 5px;
-  margin-bottom: 5px;
-  text-align: left;
-}
\ No newline at end of file

bigbluebutton-html5/private/locales/en.json

@@ -300,8 +300,8 @@
     "app.shortcut-help.accessKeyNotAvailable": "Access keys not available.",
     "app.shortcut-help.comboLabel": "Combo",
     "app.shortcut-help.functionLabel": "Function",
-    "app.shortcut-help.closeLabel": "close",
-    "app.shortcut-help.closeDesc": "closes the hotkeys modal",
+    "app.shortcut-help.closeLabel": "Close",
+    "app.shortcut-help.closeDesc": "Closes the hotkeys modal",
     "app.shortcut-help.openOptions": "Open Options",
     "app.shortcut-help.toggleUserList": "Toggle UserList",
     "app.shortcut-help.toggleMute": "Mute / Unmute",