diff --git a/devstack/plugin.sh b/devstack/plugin.sh
deleted file mode 100644
index 68d50b95d5..0000000000
--- a/devstack/plugin.sh
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env bash
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-
-function configure_enforce_scope {
-    iniset $GLANCE_CONF_DIR/glance-api.conf oslo_policy enforce_scope true
-    iniset $GLANCE_CONF_DIR/glance-api.conf oslo_policy enforce_new_defaults true
-    iniset $GLANCE_CONF_DIR/glance-api.conf DEFAULT enforce_secure_rbac true
-    sudo systemctl restart devstack@g-api
-}
-
-function configure_protection_tests {
-    iniset $TEMPEST_CONFIG image-feature-enabled enforce_scope true
-    iniset $TEMPEST_CONFIG auth admin_system true
-    iniset $TEMPEST_CONFIG auth admin_project_name ''
-}
-
-# For more information on Devstack plugins, including a more detailed
-# explanation on when the different steps are executed please see:
-# https://docs.openstack.org/devstack/latest/plugins.html
-
-if [[ "$1" == "stack" && "$2" == "test-config" ]]; then
-    # This phase is executed after Tempest was configured
-    echo "Glance plugin - Test-config phase"
-    if [[ "$(trueorfalse False GLANCE_ENFORCE_SCOPE)" == "True" ]] ; then
-        # devstack and tempest assume enforce_scope is false, so need to wait
-        # until the final phase to turn it on
-        configure_enforce_scope
-        configure_protection_tests
-    fi
-fi