hotfix: dummy TokenChecker 제거

src/App.jsx

@@ -2,12 +2,10 @@ import React from "react";
 import { BrowserRouter as Router } from "react-router-dom";
 import Layout from "./layout";
 import AppRoutes from "./AppRoutes";
-import TokenExpirationChecker from './components/TokenExpirationChecker';
 
 function App() {
   return (
     <Router>
-      <TokenExpirationChecker />
       <Layout>
         <AppRoutes />
       </Layout>