ONOS-4415 Remove OmsPort out of core.

Change-Id: Ic796c4e715789ba18f350f28e29db04dd537822f
diff --git a/core/api/src/main/java/org/onosproject/net/device/OmsPortDescription.java b/core/api/src/main/java/org/onosproject/net/device/OmsPortDescription.java
index 74c040f..4d88476 100644
--- a/core/api/src/main/java/org/onosproject/net/device/OmsPortDescription.java
+++ b/core/api/src/main/java/org/onosproject/net/device/OmsPortDescription.java
@@ -23,7 +23,10 @@
 
 /**
  * Default implementation of immutable OMS port description.
+ *
+ * @deprecated in Goldeneye (1.6.0)
  */
+@Deprecated
 public class OmsPortDescription extends DefaultPortDescription {
 
     private final Frequency minFrequency;
@@ -39,7 +42,10 @@
      * @param maxFrequency  maximum frequency
      * @param grid          grid spacing frequency
      * @param annotations   optional key/value annotations map
+     *
+     * @deprecated in Goldeneye (1.6.0)
      */
+    @Deprecated
     public OmsPortDescription(PortNumber number, boolean isEnabled, Frequency minFrequency, Frequency maxFrequency,
                               Frequency grid, SparseAnnotations... annotations) {
         super(number, isEnabled, Port.Type.OMS, 0, annotations);
@@ -56,7 +62,10 @@
      * @param maxFrequency  maximum frequency
      * @param grid          grid spacing frequency
      * @param annotations   optional key/value annotations map
+     *
+     * @deprecated in Goldeneye (1.6.0)
      */
+    @Deprecated
     public OmsPortDescription(PortDescription base, Frequency minFrequency, Frequency maxFrequency,
                               Frequency grid, SparseAnnotations annotations) {
         super(base, annotations);