build: fix env.h for cpp20

Co-authored-by: joyeecheung <joyeec9h3@gmail.com>
PR-URL: #45516
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>

src/env.h

@@ -453,9 +453,6 @@ struct DeserializeRequest {
   v8::Global<v8::Object> holder;
   int index;
   InternalFieldInfoBase* info = nullptr;  // Owned by the request
-
-  // Move constructor
-  DeserializeRequest(DeserializeRequest&& other) = default;
 };
 
 struct EnvSerializeInfo {
@@ -519,13 +516,6 @@ struct SnapshotData {
   static bool FromBlob(SnapshotData* out, FILE* in);
 
   ~SnapshotData();
-
-  SnapshotData(const SnapshotData&) = delete;
-  SnapshotData& operator=(const SnapshotData&) = delete;
-  SnapshotData(SnapshotData&&) = delete;
-  SnapshotData& operator=(SnapshotData&&) = delete;
-
-  SnapshotData() = default;
 };
 
 /**