I have to agree with everyone else. Your classes in medical school will give you all of the information you need to know. At best, your notes from undergrad could serve as a reference for a concept you struggle with, but then again that's what textbooks/step review books are for. If your notes are on the computer, that makes them slightly more practical because of the search function, but I still don't think you'll use them. And as far as paper notes go, it would take way too long to even find what you're looking for and probably wouldn't be a good use of your time.