tests: Small refactoring of test cases

Change-Id: I09c372c0c9c8220b3408fafbb41c43e5c216884f
Refs: #1695, #1434
diff --git a/src/handles/write-handle.hpp b/src/handles/write-handle.hpp
index 6d42630..48bd0e4 100644
--- a/src/handles/write-handle.hpp
+++ b/src/handles/write-handle.hpp
@@ -21,9 +21,9 @@
 #define REPO_HANDLES_WRITE_HANDLE_HPP
 
 #include "base-handle.hpp"
-//#include <ndn-cxx/security/signature-sha256.hpp>
-#include <ndn-cxx/security/signature-sha256-with-rsa.hpp>
+
 #include <ndn-cxx/security/validator-config.hpp>
+
 #include <queue>
 
 namespace repo {