fix: remove useless code

Author: robot

src/App.js

@@ -39,13 +39,6 @@ const chrome = window.chrome;
 //   return [LEETCODE_CN_URL, LEETCODE_URL].some((u) => url.includes(u));
 // }
 
-// 根据 Github 用户名获取用户信息
-function getUserInfo(username) {
-  return fetch(`https://api.github.com/users/${username}`)
-    .then((res) => res.json())
-    .then((res) => res);
-}
-
 const columns = [
   {
     title: "题目",