Clean up

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>

system/jlib/jsecrets.cpp

@@ -52,7 +52,6 @@
 
 //#define TRACE_SECRETS
 #include <vector>
-#include <type_traits>
 
 enum class CVaultKind { kv_v1, kv_v2 };
 
@@ -415,7 +414,7 @@ static void expandSecretKey(std::string & category, std::string & name, std::str
 
 //Represents an entry in the secret cache.  Once created it is always used for the secret.
 using cache_timestamp = unsigned;
-using cache_timestamp_diff = signed;//std::make_signed<cache_timestamp>;
+using cache_timestamp_diff = signed;
 class SecretCacheEntry : public CInterface
 {
     friend class SecretCache;