Turning off SVC_RMA reporting

I would like to be able to turn off  asking for the SVC_Return_Traveler, SVC_RMA_Receiving_Audit_Trail and SVC_RMA_Discrency reports. I know you can go into posting setup and turn off reports for other various function related to sales, financials, inventory etc. But have had no luck trying to find these to turn them off. We do not use them and they are becoming a complete waste of time during rma receiving.