fw: eliminate fibEntry in Strategy API

Strategy::lookupFib can be used to obtain FIB entry.
FIB lookup is skipped when strategy does not need it.

refs #3205

Change-Id: Icba67229cbc261d9def44ffa91461ea4b09982b2
diff --git a/daemon/fw/ncc-strategy.hpp b/daemon/fw/ncc-strategy.hpp
index 9e58494..bfbb06d 100644
--- a/daemon/fw/ncc-strategy.hpp
+++ b/daemon/fw/ncc-strategy.hpp
@@ -44,7 +44,6 @@
   virtual void
   afterReceiveInterest(const Face& inFace,
                        const Interest& interest,
-                       shared_ptr<fib::Entry> fibEntry,
                        shared_ptr<pit::Entry> pitEntry) override;
 
   virtual void
@@ -126,7 +125,7 @@
 
   /// propagate to another upstream
   void
-  doPropagate(weak_ptr<pit::Entry> pitEntryWeak, weak_ptr<fib::Entry> fibEntryWeak);
+  doPropagate(weak_ptr<pit::Entry> pitEntryWeak);
 
   /// best face did not reply within prediction
   void