remvoe pritunl (not FOSS)

- https://github.com/pritunl/pritunl/blob/master/LICENSE
- Source-code or binary products cannot be resold or distributed, Non-commercial use only, Can modify source-code but cannot distribute modifications (derivative works)

README.md

@@ -693,7 +693,6 @@ VPN software.
 - [ocserv](http://www.infradead.org/ocserv/) - Cisco AnyConnect-compatible VPN server. ([Source Code](https://gitlab.com/ocserv/ocserv)) `GPL-2.0` `C`
 - [OpenVPN](https://community.openvpn.net) - Uses a custom security protocol that utilizes SSL/TLS for key exchange. ([Source Code](https://github.com/OpenVPN/openvpn)) `GPL-2.0` `C`
 - [PiVPN](https://www.pivpn.io/) - The simplest way to setup and manage a VPN, designed for Raspberry Pi. ([Source Code](https://github.com/pivpn/pivpn)) `MIT` `Shell`
-- [Pritunl](http://pritunl.com/) - OpenVPN based solution. Easy to set up.
 - [SoftEther](https://www.softether.org/) - Multi-protocol software VPN with advanced features ([Source Code](https://github.com/SoftEtherVPN/SoftEtherVPN/)) `Apache-2.0` `C`
 - [sshuttle](https://github.com/sshuttle/sshuttle) - Poor man's VPN. `LGPL-2.1` `Python`
 - [strongSwan](https://www.strongswan.org/) - Complete IPsec implementation for Linux. ([Source Code](https://github.com/strongswan/strongswan)) `GPL-2.0` `C`