Remove remaining fwaas code

Change-Id: I24fe7a559760b985bd53373523276a8f075e5974
diff --git a/lib/neutron-legacy b/lib/neutron-legacy
index f4e577d..7dce5f7 100644
--- a/lib/neutron-legacy
+++ b/lib/neutron-legacy
@@ -292,9 +292,6 @@
 
 function _determine_config_l3 {
     local opts="--config-file $NEUTRON_CONF --config-file $Q_L3_CONF_FILE"
-    if is_service_enabled q-fwaas; then
-        opts+=" --config-file $Q_FWAAS_CONF_FILE"
-    fi
     echo "$opts"
 }