Though this seems like a good trolling type of post for Hacker News (government incompetence about technology = guaranteed upvotes), reality is that Panama will not extradite him so there is no reasonable possibility of ever convicting him in the United States. Prosecutors ask for cases to be dropped all the time and there is pro forma language for the reasoning, that it is a burden on the government (rather than a reason like, "because we found out the guy is innocent"). The DEA will probably do exactly what you might think they would do, which is to copy the data onto a couple of drives and file them away in a filing cabinet somewhere, in case they should ever be useful. The DEA's data-handling facilities need to be large enough to handle all active cases (and no larger), and there is no evidence that they are not. Perhaps this one case represents 5% of their data storage, all other cases combined represent 45%, and the other 50% is empty.
Move along, nothing to get upset about here.