I agree that it would be very easy to jumper around the thermo, but would warn you to make sure the defrost timer is still in the circuit. That way you reduce the risk of freezing the evap coils and making the thing a luke-warm beer despenser.
p.s. check www.appliancepartspros.com
they may have the diagram you are looking for.
p.s.s what I've done for my fermentation fridge is wire one of the aquarium digital temp controllers into the thermo circuit so that it now controls the entire cycle and the defrost timer is still active.