To what end? Not cheating on the weekly assignments is surely more beneficial to learning than cheating on them is, but I don’t see how removing the assignments altogether would help students learn.
If you nail the one exam, you get an A+. If you fail it, you get an F. In between, you get what your score says you get.
If you nail the one exam, you get an A+. If you fail it, you get an F. In between, you get what your score says you get.