Exchange 2007 to 2013 migration clean up

We have just recently completed our email migration from Exchange 2007 to Exchange 2013. I would like to know how to clean up Enterprise Vault without removing something that I might need. We are unning EV 11.0.1. Guessing I would think that I would removed the Ex2007 server as a target. Remove the Archiving Task for the Ex2007 server (does this remove the msmq's). I'm not sure of what else should be done.