mass delete of "windows File server agent"

Is there  a tool or a script to be able to delete unreachable winnas that no longer have a filer associated with it?

There is a a mass deletion of shares in the console but nothing for servers (product servers) or filers.
The  tool available in the knowledgebase is also designed for shares.

I am looking for a method to remove winnas servers being decommissioned in the upgrade to a new windows version leaving me with thousands of clicks to walk through the old unreachable servers individually.

I could not find anything publicly available.

Thanks 
Pix