Remove configuration of RabbitMQ singleton from setup.sh

puppet/setup.sh

@@ -7,7 +7,6 @@ python3 ./manage.py migrate --no-input
 # create a superuser
 cat << EOF  | ./manage.py shell
 from feudal.backend.models.users import User;
-from feudal.backend.models.brokers import RabbitMQInstance;
 
 username = '${1}'
 password = '${2}'
@@ -22,8 +21,4 @@ else:
 admin.user_type = 'admin'
 admin.save()
 
-rs = RabbitMQInstance.objects.filter()
-if not rs.exists():
-	RabbitMQInstance.objects.create()
-
 EOF