Replace ndnsType with NdnsContentType

Change-Id: I74afe92d31e78d80404816113063d7f996d666c5
diff --git a/src/ndns-tlv.hpp b/src/ndns-tlv.hpp
index 3f8399d..27235a3 100644
--- a/src/ndns-tlv.hpp
+++ b/src/ndns-tlv.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014, Regents of the University of California.
+ * Copyright (c) 2014-2016, Regents of the University of California.
  *
  * This file is part of NDNS (Named Data Networking Domain Name Service).
  * See AUTHORS.md for complete list of NDNS authors and contributors.
@@ -30,7 +30,6 @@
  * @brief the field defined in NDNS packet format
  */
 enum {
-  NdnsType = 180, ///< Detailed Types are defined in NdnsType in ndns-enum.hpp
   Rr = 190,
   RrData = 191,