Remove the controversial example
Remove the controversial example

Better to clean with shell commands or other more direct methods rather
than using special plugin functionality to clean.

jenkinsci/git-plugin,jenkinsci/git-plugin,MarkEWaite/git-plugin,jenkinsci/git-plugin,MarkEWaite/git-plugin,MarkEWaite/git-plugin,jenkinsci/git-plugin,MarkEWaite/git-plugin