Remove DevStack workaround

This is not needed anymore since DevStack has been fixed.

Change-Id: I3c3237d3bba4664abf5562c1272e9bd233444140
Depends-On: Ib5a8ffe63eaec15bc29bfdd133db7169507bab82

devstack/override-defaults

@@ -6,10 +6,6 @@ Q_ML2_TENANT_NETWORK_TYPE=${Q_ML2_TENANT_NETWORK_TYPE:-"geneve"}
 Q_ML2_PLUGIN_GENEVE_TYPE_OPTIONS=${Q_ML2_PLUGIN_GENEVE_TYPE_OPTIONS:-"vni_ranges=1:65536"}
 ML2_L3_PLUGIN="networking_ovn.l3.l3_ovn.OVNL3RouterPlugin"
 
-# FIXME(Dongj): Workaround for gate failure, this will be removed after
-# https://bugs.launchpad.net/devstack/+bug/1698129 is fixed
-AGENT_BINARY=${AGENT_BINARY:-"/bin/false"}
-
 # This function is invoked by DevStack's Neutron plugin setup
 # code and is being overridden here since the OVN devstack
 # plugin will handle the install.