Remove deprecated deserialize() mthods from packet classes

Change-Id: I4e52ab368390d30f5f5f24d443a5021916d0c6a3
diff --git a/apps/dhcp/app/src/main/java/org/onosproject/dhcp/impl/DhcpManager.java b/apps/dhcp/app/src/main/java/org/onosproject/dhcp/impl/DhcpManager.java
index 3ec104a..103c9d3 100644
--- a/apps/dhcp/app/src/main/java/org/onosproject/dhcp/impl/DhcpManager.java
+++ b/apps/dhcp/app/src/main/java/org/onosproject/dhcp/impl/DhcpManager.java
@@ -564,7 +564,7 @@
 
             ARP arpPacket = (ARP) packet.getPayload();
 
-            ARP arpReply = (ARP) arpPacket.clone();
+            ARP arpReply = arpPacket.duplicate();
             arpReply.setOpCode(ARP.OP_REPLY);
 
             arpReply.setTargetProtocolAddress(arpPacket.getSenderProtocolAddress());