ParlAI Base class fix (#180)

* Fix invalid reference in ParlaiBot class init

* Remove `self.log` from `ParlaiBot` to be compatible with `ChatBotABC` property

---------

Co-authored-by: Daniel McKnight <daniel@neon.ai>

chatbot_core/parlai.py

@@ -18,7 +18,6 @@
 # China Patent: CN102017585  -  Europe Patent: EU2156652  -  Patents Pending
 from abc import abstractmethod
 from threading import Event, Thread
-from neon_utils.logger import LOG
 
 import spacy
 
@@ -36,7 +35,6 @@ def __init__(self, interactive_script, response_timeout=25,
             :param done_string: string that signals about episode done
             :param exit_string: string that signals about the finish
         """
-        self.log = LOG.create_logger('parlai_logger')
         self.nlp_engine = spacy.load("en_core_web_sm")
 
         self.agent_id = 'local_agent'