Removed usused files

Author: PrinceSumberia

src/App.test.js

@@ -2,7 +2,6 @@ import React from "react";
 import ReactDOM from "react-dom";
 import "./index.css";
 import App from "./App";
-import * as serviceWorker from "./serviceWorker";
 import { BrowserRouter } from "react-router-dom";
 
 ReactDOM.render(