As others have noted time and again in this and other GE threads:

1. There is any easy way to find out whether CBP has a record. Just don't declare the matter and see if you are denied for having made false statements.
2. It is a felony violation of federal law to make a false statement on the application or to the Officer during an interview. Will it be prosecuted? Not likely. But, nobody can say for sure.

This is a longer way of saying that it is short-sighted and reckless to fail to disclose any matter, no matter how dated and how minor.