remove Bumpy Booby (unmaintained since 2016) (#3726)

- ref. https://github.com/awesome-selfhosted/awesome-selfhosted/issues/3558
- WARNING:awesome_lint.py: Bumpy Booby: last updated -2399 days, 4:04:51.320151 ago, older than 365 days

README.md

@@ -1991,7 +1991,6 @@ _Related: [Software Development - Project Management](#software-development---pr
 _Related: [Task Management & To-do Lists](#task-management--to-do-lists), [Software Development - Project Management](#software-development---project-management)_
 
 - [Bugzilla](https://www.bugzilla.org/) - General-purpose bugtracker and testing tool originally developed and used by the Mozilla project. `MPL-2.0` `Perl`
-- [Bumpy Booby](https://bumpy-booby.derivoile.fr/) - Simple, responsive and highly customizable PHP bug tracking system. ([Source Code](https://github.com/piero-la-lune/Bumpy-Booby)) `MIT` `PHP`
 - [django-todo](http://django-todo.org/) - Pluggable, multi-user, multi-group, multi-list todo and ticketing system - a reusable app designed to be dropped into any existing Django project. ([Source Code](https://github.com/shacker/django-todo)) `BSD-3-Clause` `Python/Django`
 - [Erxes](https://erxes.io/install/) - Marketing, sales, and customer service platform designed to help businesses attract more engaged customers. ([Demo](https://demo.erxes.io/), [Source Code](https://github.com/erxes/erxes)) `GPL-3.0` `Javascript`
 - [FreeScout](https://github.com/freescout-helpdesk/freescout) - Open source clone of Help Scout: email-based customer support application, help desk and shared mailbox. `AGPL-3.0` `PHP`