[Java] fix java/cleanup.sh (#2989)
[Java] fix java/cleanup.sh (#2989)

Remove legacy-ray-related stuff from this script, and update temp file locations.
atumanov/ray,richardliaw/ray,atumanov/ray,ray-project/ray,richardliaw/ray,ujvl/ray-ng,robertnishihara/ray,stephanie-wang/ray,stephanie-wang/ray,robertnishihara/ray,ray-project/ray,ray-project/ray,stephanie-wang/ray,ray-project/ray,stephanie-wang/ray,atumanov/ray,robertnishihara/ray,stephanie-wang/ray,richardliaw/ray,ujvl/ray-ng,ray-project/ray,ray-project/ray,stephanie-wang/ray,richardliaw/ray,robertnishihara/ray,atumanov/ray,pcmoritz/ray-1,ray-project/ray,pcmoritz/ray-1,stephanie-wang/ray,atumanov/ray,richardliaw/ray,stephanie-wang/ray,pcmoritz/ray-1,richardliaw/ray,stephanie-wang/ray,atumanov/ray,pcmoritz/ray-1,pcmoritz/ray-1,atumanov/ray,robertnishihara/ray,ujvl/ray-ng,atumanov/ray,pcmoritz/ray-1,robertnishihara/ray,ujvl/ray-ng,pcmoritz/ray-1,richardliaw/ray,ray-project/ray,richardliaw/ray,robertnishihara/ray,pcmoritz/ray-1,robertnishihara/ray,robertnishihara/ray