remove socks5engine (unmaintained since 2019, website down) (#3680)

- WARNING:awesome_lint.py: SOCKS5Engine: last updated -1415 days, 1:27:39.296041 ago, older than 365 days
- ref. https://github.com/awesome-selfhosted/awesome-selfhosted/issues/3558

README.md

@@ -1654,7 +1654,6 @@ A [proxy](https://en.wikipedia.org/wiki/Proxy_server) is a server application th
 - [Redbird](https://github.com/OptimalBits/redbird) - A modern reverse proxy for node that includes cluster, HTTP2, LetsEncrypt, and Docker support. `BSD-2-Clause` `Javascript`
 - [sish](https://github.com/antoniomika/sish) - Open source serveo/ngrok alternative providing HTTP(S)/WS(S)/TCP tunnels to localhost using only SSH. `MIT` `Go`
 - [socks5-proxy-server](https://github.com/nskondratev/socks5-proxy-server) - SOCKS5 proxy server with built-in authentication and Telegram-bot for user management and user statistics on data spent (handy when you pay per GB of data). It is dockerised and simple to install. `Apache-2.0` `Nodejs`
-- [SOCKS5Engine](https://github.com/VeeSecurity/SOCKS5Engine) - Lightweight & resource-efficient SOCKS5 proxy server, optimized for high-load. `AGPL-3.0` `Go`
 - [Squid](http://www.squid-cache.org/) - Caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. ([Source Code](https://code.launchpad.net/squid)) `GPL-2.0` `C`
 - [SWAG (Secure Web Application Gateway)](https://github.com/linuxserver/docker-swag) - Nginx webserver and reverse proxy with PHP support, built-in Certbot (Let's Encrypt) client and fail2ban integration. `GPL-3.0` `Docker`
 - [Tinyproxy](https://tinyproxy.github.io/) - Light-weight HTTP/HTTPS proxy daemon. ([Source Code](https://github.com/tinyproxy/tinyproxy)) `GPL-2.0` `C`