Remove nova related config from placement

This patch is removing nova configuration
options, this was probably caused by migration
from nova-placement to placement.

Change-Id: Ib54b26428b79d5c4f554928b8634a0bb4e884a90

ansible/roles/placement/templates/placement.conf.j2

@@ -5,14 +5,6 @@ log_dir = /var/log/kolla/placement
 
 state_path = /var/lib/placement
 
-# Though my_ip is not used directly, lots of other variables use $my_ip
-my_ip = {{ api_interface_address }}
-
-transport_url = {{ rpc_transport_url }}
-
-[api]
-use_forwarded_for = true
-
 [oslo_middleware]
 enable_proxy_headers_parsing = True