dropped unnecessary configuration from later chapters

Author: progrium

config/gateway.conf.py

@@ -1,7 +1,3 @@
-import os
-
-identity = os.environ.get('IDENTITY', '127.0.0.1')
-cluster = os.environ.get('CLUSTER', '127.0.0.1').split(',')
 
 def service():
     from gtutorial.gateway import NumberGateway