diff --git a/devstack/lib/ml2 b/devstack/lib/ml2
index 936e8d4b0f5..c4ccd0b01f7 100644
--- a/devstack/lib/ml2
+++ b/devstack/lib/ml2
@@ -1,23 +1,8 @@
-source $LIBDIR/ml2_drivers/sriovnicswitch
-
-
 function configure_qos_ml2 {
     neutron_ml2_extension_driver_add "qos"
 }
 
 
-function configure_ml2 {
-    OIFS=$IFS;
-    IFS=",";
-    mechanism_drivers_array=($Q_ML2_PLUGIN_MECHANISM_DRIVERS);
-    IFS=$OIFS;
-    for mechanism_driver in "${mechanism_drivers_array[@]}"; do
-        if [ "$(type -t configure_ml2_$mechanism_driver)" = function ]; then
-            configure_ml2_$mechanism_driver
-        fi
-    done
-}
-
 function configure_ml2_extension_drivers {
     if is_neutron_legacy_enabled; then
         # NOTE(yamamoto): This overwrites what neutron-legacy set,
diff --git a/devstack/lib/ml2_drivers/sriovnicswitch b/devstack/lib/ml2_drivers/sriovnicswitch
deleted file mode 100644
index 3a12c067f90..00000000000
--- a/devstack/lib/ml2_drivers/sriovnicswitch
+++ /dev/null
@@ -1,3 +0,0 @@
-function configure_ml2_sriovnicswitch {
-    :
-}