Personally, I'd frame it and put it on the wall as a reminder not to do that again. (And yes, I have been there, done that.) But now that it's seven years later, you may feel better burning those records.
IRS says:
Keep records for 7 years if you file a claim for a loss from worthless securities or bad debt deduction.
https://www.irs.gov/businesses/small-businesses-self-employed/how-long-should-i-keep-records
