chore(css): vanilla extract example 삭제

Author: Ubinquitous

app/asd.css.ts

@@ -1,8 +1,7 @@
 import React from "react";
-import { container } from "./asd.css";
 
 const Home = () => {
-  return <div className={container}>asd</div>;
+  return <div />;
 };
 
 export default Home;