There never was a rudder trim for the TB-3 in IL-2. I've done a quick check on both 4.07 and 4.13.4 installs, and there is only pitch trim for both TB-3 models. I have also checked the TB-3's original manual and there is only an elevator trim control. (
https://ww2aircraft.net/forum/thread...3-manual.5423/ at page 60)