ONOS-4416 Remove OduCltPort out of core.

Change-Id: I04324a72e48af84afdbfa32b84c8e57f39411000
diff --git a/core/api/src/main/java/org/onosproject/net/OduCltPort.java b/core/api/src/main/java/org/onosproject/net/OduCltPort.java
index 0f3a729..4af663c 100644
--- a/core/api/src/main/java/org/onosproject/net/OduCltPort.java
+++ b/core/api/src/main/java/org/onosproject/net/OduCltPort.java
@@ -24,8 +24,10 @@
  * Implementation of ODU client port (Optical channel Data Unit).
  * Also referred to as a T-port or wide band port.
  * See ITU G.709 "Interfaces for the Optical Transport Network (OTN)"
+ *
+ * @deprecated in Goldeneye (1.6.0)
  */
-
+@Deprecated
 public class OduCltPort extends DefaultPort {
 
     private final CltSignalType signalType;