[ONOS-5911] Port removal after receiving OFPR_DELETE port status reason.

Change-Id: I1f3f6c752da5f989a2d727f378e9f04fbbb71341
diff --git a/core/api/src/main/java/org/onosproject/net/device/DeviceProviderService.java b/core/api/src/main/java/org/onosproject/net/device/DeviceProviderService.java
index f8c9442..ff34bd2 100644
--- a/core/api/src/main/java/org/onosproject/net/device/DeviceProviderService.java
+++ b/core/api/src/main/java/org/onosproject/net/device/DeviceProviderService.java
@@ -55,6 +55,17 @@
     void updatePorts(DeviceId deviceId, List<PortDescription> portDescriptions);
 
     /**
+     * Delete information about a single port of a device.
+     * It is up to the core to determine what has changed.
+     *
+     * @param deviceId         identity of the device
+     * @param portDescription       device port description
+     */
+    default void deletePort(DeviceId deviceId, PortDescription portDescription) {
+
+    }
+
+    /**
      * Notifies the core about port status change of a single port.
      *
      * @param deviceId        identity of the device