If you don't take it, they will take away your acceptance. During the first semester of dental/medical school, they audit which courses you've taken in your undergrad after acceptance to make sure that you've completed them.
My sister got audited, and they found out that she was missing one lab...they were going to take her acceptance away. The only reason they didn't is b/c she had a mixup when her school went from quarter to semester...so they let it slide...
...but that was after hours of begging and pleading.
DON'T RISK IT!!! Take the stupid course, or else you WILL get kicked out once they find out you didn't take it.