Slim down `common.hpp`

Change-Id: Ic9843a1b9ffc5b5b1fa6062c8250ba28c6aaa898
diff --git a/core/version.hpp b/core/version.hpp
index 2a20a1a..3b937fc 100644
--- a/core/version.hpp
+++ b/core/version.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  Arizona Board of Regents.
+ * Copyright (c) 2014-2024,  Arizona Board of Regents.
  *
  * This file is part of ndn-tools (Named Data Networking Essential Tools).
  * See AUTHORS.md for complete list of ndn-tools authors and contributors.
@@ -20,8 +20,6 @@
 #ifndef NDN_TOOLS_CORE_VERSION_HPP
 #define NDN_TOOLS_CORE_VERSION_HPP
 
-#include "core/common.hpp"
-
 namespace ndn::tools {
 
 /**