Remove speed buff when TX Destroyer reaches end zone
Remove speed buff when TX Destroyer reaches end zone

The TX Destroyer is a smorbot that provides a speed buff to all other
smorbots. When it is destroyed or reaches the end zone, this speed buff
should be removed.
This code was written by Max Seidman.

tiltfactor/smorball,tiltfactor/smorball,tiltfactor/smorball,tiltfactor/smorball