security+node: Fixing includes and removing deprecated files

Change-Id: If1565b8ae9c1c1dd78a0bc0490c76a836c1ceacf
diff --git a/src/security/identity/memory-identity-storage.cpp b/src/security/identity/memory-identity-storage.cpp
index 117ca35..81881a8 100644
--- a/src/security/identity/memory-identity-storage.cpp
+++ b/src/security/identity/memory-identity-storage.cpp
@@ -5,7 +5,7 @@
  * See COPYING for copyright and distribution information.
  */
 
-#include "memory-identity-storage.hpp"
+#include <ndn-cpp/security/identity/memory-identity-storage.hpp>
 
 #include <algorithm>
 #include <ndn-cpp/security/certificate/identity-certificate.hpp>