remove baselines dependency (not needed, since it is a random policy)

examples/pybullet/gym/pybullet_envs/baselines/enjoy_kuka_diverse_object_grasping.py

@@ -12,7 +12,6 @@ import gym
 from pybullet_envs.bullet.kuka_diverse_object_gym_env import KukaDiverseObjectEnv
 from gym import spaces
 
-from baselines import deepq
 
 
 class ContinuousDownwardBiasPolicy(object):
@@ -58,4 +57,4 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
+    main()