Remove accidental passes in rllib, tune (#8742)

python/ray/tune/tune.py

@@ -233,7 +233,6 @@ def run(run_or_experiment,
         space = {"lr": tune.uniform(0, 1), "momentum": tune.uniform(0, 1)}
         tune.run(my_trainable, config=space, stop={"training_iteration": 10})
     """
-    pass  # XXX: force CI
     trial_executor = trial_executor or RayTrialExecutor(
         queue_trials=queue_trials,
         reuse_actors=reuse_actors,

rllib/train.py

@@ -135,7 +135,6 @@ def create_parser(parser_creator=None):
 
 
 def run(args, parser):
-    pass  # XXX: force CI
     if args.config_file:
         with open(args.config_file) as f:
             experiments = yaml.safe_load(f)