mgmt: eliminate FaceManager::setConfigFile()

Change-Id: Ib39b05a969345448b3719047093577df31d2bf8a
Refs: #3904
diff --git a/daemon/mgmt/face-manager.cpp b/daemon/mgmt/face-manager.cpp
index 2be2e0b..ba7cb36 100644
--- a/daemon/mgmt/face-manager.cpp
+++ b/daemon/mgmt/face-manager.cpp
@@ -38,7 +38,8 @@
 NFD_LOG_INIT("FaceManager");
 
 FaceManager::FaceManager(FaceSystem& faceSystem,
-                         Dispatcher& dispatcher, CommandAuthenticator& authenticator)
+                         Dispatcher& dispatcher,
+                         CommandAuthenticator& authenticator)
   : NfdManagerBase(dispatcher, authenticator, "faces")
   , m_faceSystem(faceSystem)
   , m_faceTable(faceSystem.getFaceTable())
@@ -70,12 +71,6 @@
 }
 
 void
-FaceManager::setConfigFile(ConfigFile& configFile)
-{
-  m_faceSystem.setConfigFile(configFile);
-}
-
-void
 FaceManager::createFace(const Name& topPrefix, const Interest& interest,
                         const ControlParameters& parameters,
                         const ndn::mgmt::CommandContinuation& done)
diff --git a/daemon/mgmt/face-manager.hpp b/daemon/mgmt/face-manager.hpp
index e50b858..6f05b0f 100644
--- a/daemon/mgmt/face-manager.hpp
+++ b/daemon/mgmt/face-manager.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2017,  Regents of the University of California,
+ * Copyright (c) 2014-2018,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -28,6 +28,7 @@
 
 #include "nfd-manager-base.hpp"
 #include "face/face-system.hpp"
+
 #include <ndn-cxx/mgmt/nfd/face-status.hpp>
 #include <ndn-cxx/mgmt/nfd/face-query-filter.hpp>
 #include <ndn-cxx/mgmt/nfd/face-event-notification.hpp>
@@ -42,13 +43,8 @@
 {
 public:
   FaceManager(FaceSystem& faceSystem,
-              Dispatcher& dispatcher, CommandAuthenticator& authenticator);
-
-  /**
-   * @brief Subscribe to face_system section for the config file
-   */
-  void
-  setConfigFile(ConfigFile& configFile);
+              Dispatcher& dispatcher,
+              CommandAuthenticator& authenticator);
 
 PUBLIC_WITH_TESTS_ELSE_PRIVATE: // ControlCommand
   void