[gentoo-java] RFC: removing first generation rewriter support from java-ant-2.eclass

[Petteri Räty]

The eclass seems to already depend on a version of javatoolkit providing 
xml-rewrite-2.py so I don't see any reason to keep the old compatibility 
code around. Attached is a patch that removes it. Will test it for a 
while on my local machine and then commit unless someone objects.

Regards,
Petteri