removed devbug as the site is not valid anymore

Author: christopheexakat

README.md

@@ -152,7 +152,6 @@ Online services for PHP code, provide dashboards. They may use the previous tool
 
 ## Misc
 
-* [devbug](http://www.devbug.co.uk/) - Ongoing work on PHP Analysis in Rascal (PHP AiR).
 * [HHVM](http://hhvm.com/) - Hack Language from Facebook. Add a SCA until version 3.3.8, newer version doesn't have anymore.
 * [PHP Manipulator](https://github.com/schmittjoh/php-manipulator) - A library for analysing and modifying PHP Source Code.
 * [PHP Parser](https://github.com/glayzzle/php-parser) - A NodeJS library for parsing PHP and extracting tokens and AST.