[bitshares/bitshares-core] unsigned_int unpacking (#1267)

abitmore commented on this pull request.

> @@ -122,7 +122,6 @@ template<> struct js_name { static std::string name(){ retu
template<> struct js_name { static std::string name(){ return «bytes 28»; } };
template<> struct js_name { static std::string name(){ return «bytes 32»; } };
template<> struct js_name { static std::string name(){ return «varuint32»; } };
-template<> struct js_name { static std::string name(){ return «varint32»; } };

Actually JS code is using `varint32` everywhere but not `varuint32`. Will submit an issue there.