fw: replace Link with forwarding hint

Forwarding now processes forwarding hint on Interests,
and no longer considers the Link object.

refs #4055

Change-Id: I0331687ee8ec31afa2f1a105e903670689647c4d
diff --git a/tests/test-common.hpp b/tests/test-common.hpp
index 4d046d2..b365f9b 100644
--- a/tests/test-common.hpp
+++ b/tests/test-common.hpp
@@ -1,5 +1,5 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
+/*
  * Copyright (c) 2014-2017,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
@@ -135,13 +135,6 @@
   return data;
 }
 
-/** \brief create a Link object with fake signature
- *  \note Link may be modified afterwards without losing the fake signature.
- *        If a real signature is desired, sign again with KeyChain.
- */
-shared_ptr<Link>
-makeLink(const Name& name, std::initializer_list<std::pair<uint32_t, Name>> delegations);
-
 /** \brief create a Nack
  *  \param interest Interest
  *  \param reason Nack reason