common: remove DECL_FINAL/OVERRIDE macros; use C++11 keywords directly

Change-Id: I71a148b0df7c95387b2caa8e2b9fe93b03ca2399
Refs: #3599
diff --git a/daemon/face/unix-stream-factory.hpp b/daemon/face/unix-stream-factory.hpp
index 43fe553..2f899b6 100644
--- a/daemon/face/unix-stream-factory.hpp
+++ b/daemon/face/unix-stream-factory.hpp
@@ -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) 2014-2016,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -67,10 +67,10 @@
   createFace(const FaceUri& uri,
              ndn::nfd::FacePersistency persistency,
              const FaceCreatedCallback& onCreated,
-             const FaceCreationFailedCallback& onConnectFailed) DECL_OVERRIDE;
+             const FaceCreationFailedCallback& onConnectFailed) override;
 
   virtual std::vector<shared_ptr<const Channel>>
-  getChannels() const DECL_OVERRIDE;
+  getChannels() const override;
 
 private:
   /**