I believe the jboss version of the maven clean plugin is no longer needed. It is located here:
https://svn.labs.jboss.org/labs/jbossbuild/trunk/projects/maven-plugins/maven-clean-plugin
It looks like it was created to add the functionality of configuring which directories are deleted when "mvn clean" is run. This is no longer needed because the regular maven clean plugin has this functionality.
So if no one has a problem with me deleting it, I will remove it from subversion.