diff --git a/neutron/plugins/ml2/drivers/openvswitch/agent/common/constants.py b/neutron/plugins/ml2/drivers/openvswitch/agent/common/constants.py
deleted file mode 100644
index 2004826180c..00000000000
--- a/neutron/plugins/ml2/drivers/openvswitch/agent/common/constants.py
+++ /dev/null
@@ -1,230 +0,0 @@
-# Copyright (c) 2012 OpenStack Foundation.
-#
-# 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.
-
-from neutron_lib import constants as p_const
-
-
-# Special vlan_tci value indicating flat network
-FLAT_VLAN_TCI = '0x0000/0x1fff'
-
-# Topic for tunnel notifications between the plugin and agent
-TUNNEL = 'tunnel'
-
-# Name prefixes for veth device or patch port pair linking the integration
-# bridge with the physical bridge for a physical network
-PEER_INTEGRATION_PREFIX = 'int-'
-PEER_PHYSICAL_PREFIX = 'phy-'
-
-# Nonexistent peer used to create patch ports without associating them, it
-# allows to define flows before association
-NONEXISTENT_PEER = 'nonexistent-peer'
-
-# The different types of tunnels
-TUNNEL_NETWORK_TYPES = [p_const.TYPE_GRE, p_const.TYPE_VXLAN,
-                        p_const.TYPE_GENEVE]
-
-# --- OpenFlow table IDs
-
-# --- Integration bridge (int_br)
-
-LOCAL_SWITCHING = 0
-
-# The physical network types of support DVR router
-DVR_PHYSICAL_NETWORK_TYPES = [p_const.TYPE_VLAN, p_const.TYPE_FLAT]
-
-# Various tables for DVR use of integration bridge flows
-DVR_TO_SRC_MAC = 1
-DVR_TO_SRC_MAC_PHYSICAL = 2
-ARP_DVR_MAC_TO_DST_MAC = 3
-ARP_DVR_MAC_TO_DST_MAC_PHYSICAL = 4
-CANARY_TABLE = 23
-
-# Table for ARP poison/spoofing prevention rules
-ARP_SPOOF_TABLE = 24
-
-# Table for MAC spoof filtering
-MAC_SPOOF_TABLE = 25
-
-LOCAL_EGRESS_TABLE = 30
-LOCAL_IP_TABLE = 31
-
-# packet rate limit table
-PACKET_RATE_LIMIT = 59
-# Table to decide whether further filtering is needed
-TRANSIENT_TABLE = 60
-LOCAL_MAC_DIRECT = 61
-TRANSIENT_EGRESS_TABLE = 62
-
-# Table for DHCP
-DHCP_IPV4_TABLE = 77
-DHCP_IPV6_TABLE = 78
-
-# Tables used for ovs firewall
-BASE_EGRESS_TABLE = 71
-RULES_EGRESS_TABLE = 72
-ACCEPT_OR_INGRESS_TABLE = 73
-BASE_INGRESS_TABLE = 81
-RULES_INGRESS_TABLE = 82
-
-OVS_FIREWALL_TABLES = (
-    BASE_EGRESS_TABLE,
-    RULES_EGRESS_TABLE,
-    ACCEPT_OR_INGRESS_TABLE,
-    BASE_INGRESS_TABLE,
-    RULES_INGRESS_TABLE,
-)
-
-# Tables for parties interacting with ovs firewall
-ACCEPTED_EGRESS_TRAFFIC_TABLE = 91
-ACCEPTED_INGRESS_TRAFFIC_TABLE = 92
-DROPPED_TRAFFIC_TABLE = 93
-ACCEPTED_EGRESS_TRAFFIC_NORMAL_TABLE = 94
-
-INT_BR_ALL_TABLES = (
-    LOCAL_SWITCHING,
-    DVR_TO_SRC_MAC,
-    DVR_TO_SRC_MAC_PHYSICAL,
-    CANARY_TABLE,
-    ARP_SPOOF_TABLE,
-    MAC_SPOOF_TABLE,
-    LOCAL_MAC_DIRECT,
-    LOCAL_EGRESS_TABLE,
-    LOCAL_IP_TABLE,
-    PACKET_RATE_LIMIT,
-    TRANSIENT_TABLE,
-    TRANSIENT_EGRESS_TABLE,
-    BASE_EGRESS_TABLE,
-    RULES_EGRESS_TABLE,
-    ACCEPT_OR_INGRESS_TABLE,
-    DHCP_IPV4_TABLE,
-    DHCP_IPV6_TABLE,
-    BASE_INGRESS_TABLE,
-    RULES_INGRESS_TABLE,
-    ACCEPTED_EGRESS_TRAFFIC_TABLE,
-    ACCEPTED_INGRESS_TRAFFIC_TABLE,
-    DROPPED_TRAFFIC_TABLE)
-
-# --- Tunnel bridge (tun_br)
-
-# Various tables for tunneling flows
-DVR_PROCESS = 1
-PATCH_LV_TO_TUN = 2
-GRE_TUN_TO_LV = 3
-VXLAN_TUN_TO_LV = 4
-GENEVE_TUN_TO_LV = 6
-
-DVR_NOT_LEARN = 9
-LEARN_FROM_TUN = 10
-UCAST_TO_TUN = 20
-ARP_RESPONDER = 21
-FLOOD_TO_TUN = 22
-# NOTE(vsaienko): transit table used by networking-bagpipe driver to
-# mirror traffic to EVPN and standard tunnels to gateway nodes
-BAGPIPE_FLOOD_TO_TUN_BROADCAST = 222
-
-TUN_BR_ALL_TABLES = (
-    LOCAL_SWITCHING,
-    DVR_PROCESS,
-    PATCH_LV_TO_TUN,
-    GRE_TUN_TO_LV,
-    VXLAN_TUN_TO_LV,
-    GENEVE_TUN_TO_LV,
-    DVR_NOT_LEARN,
-    LEARN_FROM_TUN,
-    UCAST_TO_TUN,
-    ARP_RESPONDER,
-    FLOOD_TO_TUN)
-
-# --- Physical Bridges (phys_brs)
-
-# Various tables for DVR use of physical bridge flows
-DVR_PROCESS_PHYSICAL = 1
-LOCAL_VLAN_TRANSLATION = 2
-DVR_NOT_LEARN_PHYSICAL = 3
-
-PHY_BR_ALL_TABLES = (
-    LOCAL_SWITCHING,
-    DVR_PROCESS_PHYSICAL,
-    LOCAL_VLAN_TRANSLATION,
-    DVR_NOT_LEARN_PHYSICAL)
-
-# --- end of OpenFlow table IDs
-
-# type for ARP reply in ARP header
-ARP_REPLY = '0x2'
-
-# Map tunnel types to tables number
-TUN_TABLE = {p_const.TYPE_GRE: GRE_TUN_TO_LV,
-             p_const.TYPE_VXLAN: VXLAN_TUN_TO_LV,
-             p_const.TYPE_GENEVE: GENEVE_TUN_TO_LV}
-
-
-# The default respawn interval for the ovsdb monitor
-DEFAULT_OVSDBMON_RESPAWN = 30
-
-# Represent invalid OF Port
-OFPORT_INVALID = -1
-
-ARP_RESPONDER_ACTIONS = ('move:NXM_OF_ETH_SRC[]->NXM_OF_ETH_DST[],'
-                         'mod_dl_src:%(mac)s,'
-                         'load:0x2->NXM_OF_ARP_OP[],'
-                         'move:NXM_NX_ARP_SHA[]->NXM_NX_ARP_THA[],'
-                         'move:NXM_OF_ARP_SPA[]->NXM_OF_ARP_TPA[],'
-                         'load:%(mac)#x->NXM_NX_ARP_SHA[],'
-                         'load:%(ip)#x->NXM_OF_ARP_SPA[],'
-                         'in_port')
-
-# Represent ovs status
-OVS_RESTARTED = 0
-OVS_NORMAL = 1
-OVS_DEAD = 2
-
-EXTENSION_DRIVER_TYPE = 'ovs'
-
-# ovs datapath types
-OVS_DATAPATH_SYSTEM = 'system'
-OVS_DATAPATH_NETDEV = 'netdev'
-OVS_DPDK_VHOST_USER = 'dpdkvhostuser'
-OVS_DPDK_VHOST_USER_CLIENT = 'dpdkvhostuserclient'
-
-OVS_DPDK_PORT_TYPES = [OVS_DPDK_VHOST_USER, OVS_DPDK_VHOST_USER_CLIENT]
-
-# default ovs vhost-user socket location
-VHOST_USER_SOCKET_DIR = '/var/run/openvswitch'
-
-MAX_DEVICE_RETRIES = 5
-
-# OpenFlow version constants
-OPENFLOW10 = "OpenFlow10"
-OPENFLOW11 = "OpenFlow11"
-OPENFLOW12 = "OpenFlow12"
-OPENFLOW13 = "OpenFlow13"
-OPENFLOW14 = "OpenFlow14"
-OPENFLOW15 = "OpenFlow15"
-
-OPENFLOW_MAX_PRIORITY = 65535
-
-# A placeholder for dead vlans.
-DEAD_VLAN_TAG = p_const.MAX_VLAN_TAG + 1
-
-# callback resource for setting 'bridge_name' in the 'binding:vif_details'
-OVS_BRIDGE_NAME = 'ovs_bridge_name'
-
-# callback resource for notifying to ovsdb handler
-OVSDB_RESOURCE = 'ovsdb'
-
-# Used in ovs port 'external_ids' in order mark it for no cleanup when
-# ovs_cleanup script is used.
-SKIP_CLEANUP = 'skip_cleanup'