Clean up lint.

react-debug/src/App.js

@@ -3,7 +3,6 @@ import {
   HashRouter as Router,
   Switch,
   Route,
-  Link,
   useParams
 } from "react-router-dom";
 
@@ -100,20 +99,8 @@ const AlbumRoute = () => {
   return <Album album={album_id} />;
 }
 
-class App extends React.Component {
-  constructor(props) {
-    super(props);
-    this.state = {
-      curAlbum: window.location.hash,
-    };
-  }
-  render() {
-    let {curAlbum} = this.state;
-    console.log(this.state);
-    let content;
-
-    return (
-      <div className="container">
+const App = () => {
+  return <div className="container">
     <Router>
       <Switch>
         <Route exact path="/">
@@ -125,8 +112,6 @@ class App extends React.Component {
       </Switch>
     </Router>
   </div>
-    );
-  }
 }
 
 export default App;