Removed unnecessary unused interface.

Change-Id: Icb4a848ce790644a0c8695747f3777f1e0190eda

-/*
- * Copyright 2014 Open Networking Laboratory
- *
- * 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.
- */
-package org.onosproject.net.flow;
-
-import org.onosproject.net.PortNumber;
-
-/**
- * Abstraction of different kinds of treatment that can be applied to an
- * outbound packet.
- */
-public interface Treatment {
-
-    // TODO: implement these later: modifications, group
-    // TODO: elsewhere provide factory methods for some default treatments
-
-    /**
-     * Returns the port number where the packet should be emitted.
-     *
-     * @return output port number
-     */
-    PortNumber output();
-
-}