class Value: remove unused code

etcd/Value.hpp

@@ -4,12 +4,6 @@
 #include <string>
 #include <vector>
 
-namespace web {
-  namespace json {
-    class value;
-  }
-}
-
 namespace etcdv3 {
   class KeyValue;
 }
@@ -61,7 +55,6 @@ namespace etcd
     friend class DeleteRpcResponse;
     friend class AsyncDeleteResponse;
     Value();
-    Value(web::json::value const & json_value);
     Value(etcdv3::KeyValue const & kvs);
     std::string _key;
     bool        dir;

src/Value.cpp

@@ -1,7 +1,5 @@
 #include <iomanip>
 
-#include <cpprest/http_client.h>
-
 #include "etcd/Value.hpp"
 #include "etcd/v3/KeyValue.hpp"