deleted deprecated intro from App.tsx

Author: llam722

src/app/components/App.tsx

@@ -2,13 +2,10 @@ import React, { useReducer } from 'react';
 import {
   MemoryRouter as Router,
 } from 'react-router-dom';
-// import { Steps, Hints } from 'intro.js-react';
 import MainContainer from '../containers/MainContainer';
 import { StoreContext } from '../store';
 import mainReducer from '../reducers/mainReducer.js';
 
-// import 'intro.js/introjs.css';
-
 // currentTab is the current active tab within Google Chrome.
 // This is used to decide what tab Reactime should be monitoring. This can be "locked"
 // currentTabInApp is the current active tab within Reactime (Map, Performance, History, etc).