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)