Remove overriden resultstracker config from the st2tests config.py
Remove overriden resultstracker config from the st2tests config.py

StackStorm/st2,nzlosh/st2,StackStorm/st2,nzlosh/st2,StackStorm/st2,Plexxi/st2,Plexxi/st2,nzlosh/st2,StackStorm/st2,nzlosh/st2,Plexxi/st2,Plexxi/st2