Using multiple conformance packs - how to de-dupe rules?

[csongpaxos]

I am trying to use a few conformance packs for config, but there is a service limit of 150 rules for "Maximum number of AWS Config Rules per account across all conformance packs" that can't be increased.

Some of these packs have the same rule. Is there a good way to remove the duplicates so I don't run into the 150 rule service limit? How can I use for example 5 of these packs and also not hit this limit? Thx.