How to Delete Attachments from PO, AP, SO and AR in a NON-PROD using Automation

Once the Prod is cloned, we need to restrict certain details from Non-Prod users such as Attachments in PO, SO, AP and AR for confidential purpose.
Is there a Automation way to remove all the attachments one at a time ?
Kinldy provide your input on this or suggest an Alternative method to restrict the Attachment View.

Thanks
Naveen