Remove some invalid characters in battleunit.h
Remove some invalid characters in battleunit.h

I don't know what codepage these were intended to be in...

Istrebitel/OpenApoc,FranciscoDA/OpenApoc,FranciscoDA/OpenApoc,FranciscoDA/OpenApoc,steveschnepp/OpenApoc,pmprog/OpenApoc,pmprog/OpenApoc,steveschnepp/OpenApoc,Istrebitel/OpenApoc