removed the logging.basicConfig in other files, so that we have one place to control this (#1285)

ml-agents/mlagents/envs/communicator.py

 
 from .communicator_objects import UnityOutput, UnityInput
 
-logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger("mlagents.envs")
 
 

ml-agents/mlagents/envs/rpc_communicator.py

 from .exception import UnityTimeOutException
 
 
-logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger("mlagents.envs")
 
 

ml-agents/mlagents/envs/socket_communicator.py

 from .exception import UnityTimeOutException
 
 
-logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger("mlagents.envs")