Undo a netca silent installation

Hello,

When I setup a database, I use "netca -silent -responseFile c:\temp\netca.rsp"  to create the Listener and feed the tnsnames.ora.

Since I am running some tests, and wants sometimes to recreate the db from a clean state, I first run oradim -delete and remove data folders?

Then I would like to delete listener and tnsnames entries using the commandline.

I currently do it interactively, but, since I know the values, I could use netca to remove them, if it is possible.

Thanks