Remove methods deprecated in Drake from L2ModificationInstruction API

Change-Id: I30dbc2e9c590d4bc2bc672e13581dbd1c3b3561b
diff --git a/core/common/src/main/java/org/onosproject/codec/impl/EncodeInstructionCodecHelper.java b/core/common/src/main/java/org/onosproject/codec/impl/EncodeInstructionCodecHelper.java
index 268d110..5db7c6d 100644
--- a/core/common/src/main/java/org/onosproject/codec/impl/EncodeInstructionCodecHelper.java
+++ b/core/common/src/main/java/org/onosproject/codec/impl/EncodeInstructionCodecHelper.java
@@ -144,7 +144,7 @@
             case MPLS_LABEL:
                 final L2ModificationInstruction.ModMplsLabelInstruction modMplsLabelInstruction =
                         (L2ModificationInstruction.ModMplsLabelInstruction) instruction;
-                result.put(InstructionCodec.MPLS_LABEL, modMplsLabelInstruction.mplsLabel().toInt());
+                result.put(InstructionCodec.MPLS_LABEL, modMplsLabelInstruction.label().toInt());
                 break;
 
             case MPLS_PUSH: