diff --git a/ansible/roles/nova/templates/nova.conf.j2 b/ansible/roles/nova/templates/nova.conf.j2
index 91b7c809ba..3e6de22f64 100644
--- a/ansible/roles/nova/templates/nova.conf.j2
+++ b/ansible/roles/nova/templates/nova.conf.j2
@@ -18,14 +18,6 @@ metadata_workers = {{ openstack_service_workers }}
 metadata_listen = {{ api_interface_address }}
 metadata_listen_port = {{ nova_metadata_port }}
 
-firewall_driver = nova.virt.firewall.NoopFirewallDriver
-
-{% if neutron_plugin_agent == "openvswitch" %}
-linuxnet_interface_driver = nova.network.linux_net.LinuxOVSInterfaceDriver
-{% elif neutron_plugin_agent == "linuxbridge" %}
-linuxnet_interface_driver = nova.network.linux_net.NeutronLinuxBridgeInterfaceDriver
-{% endif %}
-
 allow_resize_to_same_host = true
 
 {% if enable_ironic | bool %}