Remove plumi as it's dead (#2903)

README.md

@@ -1451,7 +1451,6 @@ _Related: [Monitoring](#monitoring)_
 - [Photoview](https://photoview.github.io/) - A simple and user-friendly Photo Gallery for personal servers. It is made for photographers and aims to provide an easy and fast way to navigate directories, with thousands of high resolution photos. ([Demo](https://photos.qpqp.dk/), [Source Code](https://github.com/photoview/photoview)) `GPL-3.0` `Go`
 - [PiGallery 2](https://bpatrik.github.io/pigallery2/) - A directory-first photo gallery website, with a rich UI, optimised for running on low resource servers. ([Source Code](https://github.com/bpatrik/pigallery2)) `MIT` `Docker/Nodejs`
 - [Piwigo](https://piwigo.org/) - Photo gallery software for the web, built by an active community of users and developers. ([Demo](https://piwigo.org/demo/), [Source Code](https://github.com/Piwigo/Piwigo)) `GPL-2.0` `PHP`
-- [Plumi](https://engagemedia.org/projects/plumi/) - Create your own sophisticated video-sharing site. ([Source Code](https://github.com/plumi/plumi.app)) `GPL-2.0` `Python`
 - [Quru Image Server](https://quruimageserver.com/) - High performance dynamically resizing image server offering directory based access control cropping, rotation, color management and other tools. ([Demo](https://quruimageserver.com), [Source Code](https://github.com/quru/qis)) `AGPL-3.0` `Python`
 - [sigal](https://github.com/saimn/sigal) - Yet another simple static gallery generator. `MIT` `Python`
 - [UberGallery](https://www.ubergallery.net) - UberGallery is an easy to use, simple to manage, web photo gallery. UberGallery does not require a database and supports JPEG, GIF and PNG file types. Simply upload your images and UberGallery will automatically generate thumbnails and output HTML. ([Source Code](https://github.com/UberGallery/UberGallery)) `MIT` `PHP`