refactor: remove unused dependencies

src/App.js

@@ -1,5 +1,4 @@
 import React from 'react';
-import { BrowserRouter as Router, Route, Switch, Redirect } from 'react-router-dom';
 import { Container } from 'reactstrap';
 
 import './App.css';

src/components/Footer.js

@@ -4,10 +4,6 @@ import {
   Col
 } from 'reactstrap';
 
-const style = {
-  textAlign: 'center'
-}
-
 class Footer extends Component {
   constructor(props) {
     super(props);