Update README.md

Author: 0xkookoo

README.md

@@ -36,32 +36,6 @@
     - [Java](https://github.com/apachecn/awesome-leetcode/tree/master/docs/Algorithm_Implementation/Java)
     - [JavaScript](https://github.com/apachecn/awesome-leetcode/tree/master/docs/Algorithm_Implementation/JavaScript)
     - [C++](https://github.com/apachecn/awesome-leetcode/tree/master/docs/Algorithm_Implementation/C++)
-    
-## Useful Links
-- [结构化算法刷题训练指南](https://xiaozhuanlan.com/Lisanaaa)(希望大家支持一下！)
-- [编程之法：面试和算法心得](https://wizardforcel.gitbooks.io/the-art-of-programming-by-july/content/index.html)
-- [kamyu104的Github](https://github.com/kamyu104/LeetCode-Solutions)
-- [数据结构与算法/leetcode/lintcode题解](https://algorithm.yuanbin.me/zh-hans/)
-- [看云文档：数据结构与算法](https://www.kancloud.cn/kancloud/data-structure-and-algorithm-notes/73048)
-- [visualgo算法可视化网站](https://visualgo.net/en)
-- [Data Structure Visualization](https://www.cs.usfca.edu/~galles/visualization/Algorithms.html)
-- [HiredInTech System Design](https://www.hiredintech.com/)
-- [mitcc的Github](https://github.com/mitcc/AlgoSolutions)
-- [小土刀的面试刷题笔记](http://wdxtub.com/interview/14520594642530.html)
-- [nonstriater/Learn-Algorithms](https://github.com/nonstriater/Learn-Algorithms)
-- [剑指 Offer 题解](https://github.com/gatieme/CodingInterviews)
-- https://github.com/liuchuo/LeetCode
-- [公瑾的Github](https://github.com/yuzhoujr/leetcode)
-- [shejie1993](https://shenjie1993.gitbooks.io/leetcode-python/content/096%20Unique%20Binary%20Search%20Trees.html)
-- [算法/NLP/深度学习/机器学习面试笔记](https://github.com/imhuay/Interview_Notes-Chinese)
-- [CS-Notes](https://github.com/CyC2018/CS-Notes)
-- [OI Wiki](https://oi-wiki.org)
-- [leetcode-in-go](https://github.com/aQuaYi/LeetCode-in-Go#leetcode-%E7%9A%84-go-%E8%A7%A3%E7%AD%94)
-- [Algorithm Archive](https://github.com/algorithm-archivists/algorithm-archive)
-- [Grokking the System Design Interview](https://www.educative.io/collection/5668639101419520/5649050225344512)
-- [算法珠玑](https://soulmachine.gitbooks.io/algorithm-essentials/java/)
-- [AlgoCasts 用心做好每一个算法视频](https://algocasts.io)
-- [awesome-golang-leetcode](https://github.com/kylesliu/awesome-golang-leetcode)
 
 ## Sponsor
 1. [Lisanaaa](https://github.com/Lisanaaa): **Feel free to see my profile and send me an email if you have any job opportunities.**