Support to specify Ofdpa extension through REST API

Code clean up for Nicira extension codec.

Change-Id: Idbbfd1ca12b01d46e3b6c90ebce39e6a6605cb58
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/codec/MoveExtensionTreatmentCodec.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/codec/MoveExtensionTreatmentCodec.java
index 4610c1b..f3938e6 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/extensions/codec/MoveExtensionTreatmentCodec.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/codec/MoveExtensionTreatmentCodec.java
@@ -76,9 +76,6 @@
         // parse dst
         int dst = nullIsIllegal(json.get(DST), DST + MISSING_MEMBER_MESSAGE).asInt();
 
-        MoveExtensionTreatment moveExtensionTreatment =
-                new DefaultMoveExtensionTreatment(srcOfs, dstOfs, nBits, src, dst, type);
-
-        return moveExtensionTreatment;
+        return new DefaultMoveExtensionTreatment(srcOfs, dstOfs, nBits, src, dst, type);
     }
 }