Remove dead demo link ViMbAdmin

README.md

@@ -1266,7 +1266,7 @@ _See also: [List of streaming media systems - Wikipedia](https://en.wikipedia.or
 - [string.is](https://string.is/) - An open-source, privacy-friendly online string toolkit for developers. ([Source Code](https://github.com/recurser/string-is)) `AGPL-3.0` `Nodejs`
 - [TeslaMate](https://github.com/adriankumpf/teslamate) - A powerful data logger for Tesla vehicles. `MIT` `Elixir`
 - [Trello Burndown](https://github.com/mtricht/trello-burndown) `⚠` - Easy to use SCRUM burndown chart for Trello boards. `MIT` `Go/Docker`
-- [ViMbAdmin](https://www.vimbadmin.net/) - Provides a web based virtual mailbox administration system to allow mail administrators to easily manage domains, mailboxes and aliases. ([Demo](https://www.vimbadmin.net/demo/auth/login), [Source Code](https://github.com/opensolutions/ViMbAdmin)) `GPL-3.0` `PHP`
+- [ViMbAdmin](https://www.vimbadmin.net/) - Provides a web based virtual mailbox administration system to allow mail administrators to easily manage domains, mailboxes and aliases. ([Source Code](https://github.com/opensolutions/ViMbAdmin)) `GPL-3.0` `PHP`
 - [Web fonts repository](https://github.com/Finesse/web-fonts-repository) - Simple webfont hosting. Google Fonts alternative for your own fonts. `MIT` `PHP`
 - [WeeWX](https://weewx.com/) - Open source software for your weather station. ([Demo](https://weewx.com/showcase.html), [Source Code](https://github.com/weewx/weewx)) `GPL-3.0` `Python`
 - [ytdl-webserver](https://github.com/Algram/ytdl-webserver) - Docker-ready webserver for downloading youtube videos. `MIT` `Nodejs`