Remove Scrumblr

- https://github.com/aliasaria/scrumblr/branches is unmaintained since 2017 except a minor commit for sandstorm.io compatibility
- https://github.com/aliasaria/scrumblr from which the fork originated is also unmaintained

Ref. https://github.com/awesome-selfhosted/awesome-selfhosted/issues/1767

README.md

@@ -1362,7 +1362,6 @@ See https://staticsitegenerators.net and https://www.staticgen.com
 - [myTinyTodo](http://www.mytinytodo.net/) - Simple way to manage your todo list in AJAX style. Uses PHP, jQuery, SQLite/MySQL. GTD compliant. ([Demo](http://www.mytinytodo.net/demo/), [Source Code](https://bitbucket.org/maxpozdeev/mytinytodo)) `GPL-2.0` `PHP`
 - [PHP Task/Todo list](https://github.com/lgg/tasks.php) - Simple task/todo list that uses a JSON text file for the tasks. `MIT` `PHP`
 - [Restyaboard](http://restya.com/board/) - Open source Trello-like kanban board. ([Demo](http://restya.com/board/demo.html), [Source Code](https://github.com/RestyaPlatform/board)) `OSL-3.0` `PHP`
-- [scrumblr](http://scrumblr.ca/) - Collaborative Online Scrum Tool Using Websockets, Node.js, jQuery, and CSS3. ([Demo](http://scrumblr.ca/demo), [Source Code](https://github.com/ocdtrekkie/scrumblr/tree/sandstorm)) `GPL-3.0` `Nodejs`
 - [TaskBoard](http://taskboard.matthewross.me/) - Kanban-inspired app for keeping track of things that need to get done. ([Demo](https://taskboard.matthewross.me/demo.html), [Source Code](https://github.com/kiswa/TaskBoard)) `MIT` `PHP`
 - [Taskfreak](http://www.taskfreak.com/original) - Simple but efficient web based task manager written in PHP. `GPL-3.0` `PHP`
 - [Tasks](https://github.com/m1guelpf/tasks) - Simple tasks and notes manager written in PHP, jQuery and Bootstrap using a custom flat file database. `MPL-2.0` `PHP`