Skip downloading patches for computers excluded in the APD

I was wondering if there was a way to not download patches for computer in the APD that are marked as excluded. I have our APD set to exclude our servers since we don't want them patching. But I noticed that in the downloaded patches we have it set to remove patches after 3 months and not missing option. That works fine except that it has downloaded patches from 10 months ago since we don't patch servers they got scanned upon initial agent installation but have not been patched. Thus it downloaded those missing patches and has not cleaned them up since there are still missing. Is there way to have these patches cleaned up automatically from computer excluded in the APD?