Remove previously deprecated headers, methods, and constants

Change-Id: I3e809e25c8f2bc2ae0f027413d9e0161245353c6
Refs: #3988
diff --git a/src/util/ethernet.cpp b/src/util/ethernet.cpp
index c880d0c..e9160d9 100644
--- a/src/util/ethernet.cpp
+++ b/src/util/ethernet.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014-2015 Regents of the University of California,
+ * Copyright (c) 2014-2017 Regents of the University of California,
  *                         Arizona Board of Regents,
  *                         Colorado State University,
  *                         University Pierre & Marie Curie, Sorbonne University,
@@ -81,7 +81,7 @@
 
   // - apparently gcc-4.6 does not support the 'hh' type modifier
   // - std::snprintf not found in some environments
-  //   http://redmine.named-data.net/issues/2299 for more information
+  //   https://redmine.named-data.net/issues/2299 for more information
   snprintf(s, sizeof(s), "%02x%c%02x%c%02x%c%02x%c%02x%c%02x",
            at(0), sep, at(1), sep, at(2), sep, at(3), sep, at(4), sep, at(5));