Stop setting [ovs_vif_ovs] ovsdb_interface

The option was already deprecated in os-vif 2.2.0[1]. The override is
no longer required since bug 1929446 was already resolved.

[1] https://review.opendev.org/c/openstack/os-vif/+/744816

Related-Bug: #1929446
Change-Id: I5bc55723a178b32d947da2ac91d2f62aa8124990

lib/os-vif

@@ -1,10 +1,5 @@
 #!/bin/bash
 
-# support vsctl or native.
-# until bug #1929446 is resolved we override the os-vif default
-# and fall back to the legacy "vsctl" driver.
-OS_VIF_OVS_OVSDB_INTERFACE=${OS_VIF_OVS_OVSDB_INTERFACE:="vsctl"}
-
 function is_ml2_ovs {
     if [[ "${Q_AGENT}" == "openvswitch" ]]; then
         echo "True"
@@ -19,11 +14,9 @@ OS_VIF_OVS_ISOLATE_VIF=$(trueorfalse False OS_VIF_OVS_ISOLATE_VIF)
 
 function configure_os_vif {
     if [[ -e ${NOVA_CONF} ]]; then
-        iniset ${NOVA_CONF} os_vif_ovs ovsdb_interface ${OS_VIF_OVS_OVSDB_INTERFACE}
         iniset ${NOVA_CONF} os_vif_ovs isolate_vif ${OS_VIF_OVS_ISOLATE_VIF}
     fi
     if [[ -e ${NEUTRON_CONF} ]]; then
-        iniset ${NEUTRON_CONF} os_vif_ovs ovsdb_interface ${OS_VIF_OVS_OVSDB_INTERFACE}
         iniset ${NEUTRON_CONF} os_vif_ovs isolate_vif ${OS_VIF_OVS_ISOLATE_VIF}
     fi
 }