What happens if I just don't submit one of my transcripts?

A few summers ago I took some prerequisite coursework at a college, but ended up doing very poorly. I have since re-taken those classes and received an A. The only coursework I have taken at this school was those two classes. If I just don't submit my transcript from that school, will I be punished? I would prefer not to include those grades in my GPA, and because I took them after graduating and I don't really need them anymore can I just not report them?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums