Removed iteritems and xrange for python3 in rl_pong (#182)
Removed iteritems and xrange for python3 in rl_pong (#182)

* Removed iteritems and xrange for python3

* Remove unused variable.

alanamarzoev/ray,richardliaw/ray,robertnishihara/ray,richardliaw/ray,stephanie-wang/ray,atumanov/ray,robertnishihara/ray,Wapaul1/ray,pcmoritz/ray-1,ujvl/ray-ng,richardliaw/ray,stephanie-wang/ray,Wapaul1/ray,atumanov/ray,pcmoritz/ray-1,pcmoritz/ray-1,ujvl/ray-ng,atumanov/ray,stephanie-wang/ray,ray-project/ray,richardliaw/ray,ray-project/ray,pcmoritz/ray-1,Wapaul1/ray,ray-project/ray,robertnishihara/ray,richardliaw/ray,pcmoritz/ray-1,richardliaw/ray,ray-project/ray,ray-project/ray,Wapaul1/ray,alanamarzoev/ray,stephanie-wang/ray,robertnishihara/ray,ujvl/ray-ng,pcmoritz/ray-1,robertnishihara/ray,atumanov/ray,stephanie-wang/ray,stephanie-wang/ray,atumanov/ray,ujvl/ray-ng,ray-project/ray,alanamarzoev/ray,robertnishihara/ray,Wapaul1/ray,pcmoritz/ray-1,ray-project/ray,stephanie-wang/ray,stephanie-wang/ray,richardliaw/ray,alanamarzoev/ray,ray-project/ray,alanamarzoev/ray,Wapaul1/ray,robertnishihara/ray,robertnishihara/ray,atumanov/ray,richardliaw/ray,pcmoritz/ray-1,stephanie-wang/ray,alanamarzoev/ray,robertnishihara/ray,atumanov/ray,atumanov/ray