AWS AMIs with extra snapshot attached

We have a build process that creates Amis and in the process we attached aws snapshot with some installation media. The problem is that I have multiple Amis with extra snapshot that I would like to remove/disassociate. I couldn't find anything on the aws cli to do this on the ami itself without deregistering.

Found this but don't think I am able to deregister the ami. https://4sysops.com/archives/delete-the-amazon-machine-image-ami-and-its-associated-snapshots/