remove requestbin (sourec code gone)

README.md

@@ -1414,7 +1414,6 @@ _See [Ticketing](#ticketing)_
 - [JupyterLab](http://jupyterlab.github.io/jupyterlab/) - Web-based environment for interactive and reproducible computing. ([Demo](https://mybinder.org/v2/gh/jupyterlab/jupyterlab-demo/try.jupyter.org?urlpath=lab), [Source Code](https://github.com/jupyterlab/jupyterlab/)) `BSD-3-Clause` `Python/Docker`
 - [ML Workspace](https://github.com/ml-tooling/ml-workspace) - All-in-one web-based IDE for machine learning and data science. `Apache-2.0` `Docker`
 - [Regexr](http://regexr.com/) - RegExr is a HTML/JS based tool for creating, testing, and learning about Regular Expressions. ([Source Code](https://github.com/gskinner/regexr)) `MIT` `Nodejs`
-- [RequestBin](https://github.com/Runscope/requestbin) - Inspect HTTP requests. Debug webhooks. `MIT` `python`
 - [RStudio Server](https://www.rstudio.com/products/rstudio/#Server) - Web browser based IDE for R. ([Source Code](https://github.com/rstudio/rstudio)) `AGPL-3.0` `Java/C++`
 - [Slingcode](https://slingcode.net/) - Web app IDE and computing platform in a single static HTML file. ([Demo](https://slingcode.net/slingcode.html), [Source Code](https://github.com/chr15m/slingcode/)) `MIT` `HTML`
 - [sourcegraph](https://sourcegraph.com) - Sourcegraph is a fast, open-source, fully-featured code search and navigation engine written in Go. ([Source Code](https://github.com/sourcegraph/sourcegraph)) `Apache-2.0` `Go`