Fix eslint warnings

Author: bruceplai

src/App.js

@@ -1,5 +1,5 @@
 /* eslint-disable max-lines-per-function */
-import React, { useEffect, useState } from 'react';
+import React, { useEffect } from 'react';
 import { BrowserRouter, Redirect, Route, Switch } from 'react-router-dom';
 import { QueryParamProvider } from 'use-query-params';
 import Layout from './components/common/Layout';

src/pages/Privacy/PopUp.js

@@ -67,7 +67,7 @@ const useStyles = makeStyles((theme) => ({
 const PopUp = () => {
   const classes = useStyles();
   const date = new Date();
-  
+
   const setCookie = (cookieEmail, cookieValue, expDays) => {
     date.setTime(date.getTime() + (expDays * 24 * 60 * 60 * 1000));
     const expires = 'expires=' + date.toUTCString();