Delete XML Files depending on content

[Robert Soesemann]

Hello,
 
I am looking for a clean and fast way to delete XML files depending on
their content.
 
To give you an idea of what I am doing: During a time consuming
migration process I need to scan a folder structure for relevant files
that need to be xsltransformed and validated and so on...
Files that are not relevant will be marked by an xslt with an empty root
node <DONTPROCESS/>
 
In Ant I want to delete all xml files that have this node.
 
Any ideas would be welcome!
 
Thanks in advance,
 
Robert