core: move nfd-specific files to daemon/

Refs: #4922
Change-Id: I2243dbb87c63f9cbaf7d7051d7a0d4bca2f9fdb5
diff --git a/daemon/face/face-system.hpp b/daemon/face/face-system.hpp
index 833da1b..2bcdfad 100644
--- a/daemon/face/face-system.hpp
+++ b/daemon/face/face-system.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2018,  Regents of the University of California,
+ * Copyright (c) 2014-2019,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -27,8 +27,9 @@
 #define NFD_DAEMON_FACE_FACE_SYSTEM_HPP
 
 #include "channel.hpp"
-#include "core/config-file.hpp"
-#include "core/network-predicate.hpp"
+#include "network-predicate.hpp"
+#include "common/config-file.hpp"
+
 #include <ndn-cxx/net/network-address.hpp>
 #include <ndn-cxx/net/network-interface.hpp>
 #include <ndn-cxx/net/network-monitor.hpp>