delete ShadowNodeFragment::Value (#43962)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/43962

changelog: [internal]

Not used, let's delete it.

Reviewed By: fabriziocucci

Differential Revision: D55689099

fbshipit-source-id: 37751aad8119a7421fc5f2f78230540da4a244ea

packages/react-native/ReactCommon/react/renderer/core/ShadowNodeFragment.cpp

@@ -31,15 +31,4 @@ const State::Shared& ShadowNodeFragment::statePlaceholder() {
   return instance;
 }
 
-using Value = ShadowNodeFragment::Value;
-
-Value::Value(const ShadowNodeFragment& fragment)
-    : props(fragment.props),
-      children(fragment.children),
-      state(fragment.state) {}
-
-Value::operator ShadowNodeFragment() const {
-  return ShadowNodeFragment{props, children, state};
-}
-
 } // namespace facebook::react

packages/react-native/ReactCommon/react/renderer/core/ShadowNodeFragment.h

@@ -21,8 +21,6 @@ namespace facebook::react {
  * Note: Most of the fields are `const &` references (essentially just raw
  * pointers) which means that the Fragment does not copy/store them nor
  * retain ownership of them.
- * Use `ShadowNodeFragment::Value` (see below) to create an owning copy of the
- * fragment content to store or pass the data asynchronously.
  */
 struct ShadowNodeFragment {
   const Props::Shared& props = propsPlaceholder();
@@ -37,28 +35,6 @@ struct ShadowNodeFragment {
   static const Props::Shared& propsPlaceholder();
   static const ShadowNode::SharedListOfShared& childrenPlaceholder();
   static const State::Shared& statePlaceholder();
-
-  /*
-   * `ShadowNodeFragment` is not owning data-structure, it only stores raw
-   * pointers to the data. `ShadowNodeFragment::Value` is a convenient owning
-   * counterpart of that.
-   */
-  class Value final {
-   public:
-    /*
-     * Creates an object with given `ShadowNodeFragment`.
-     */
-    Value(const ShadowNodeFragment& fragment);
-
-    /*
-     * Creates a `ShadowNodeFragment` from the object.
-     */
-    explicit operator ShadowNodeFragment() const;
-
-    Props::Shared props;
-    ShadowNode::SharedListOfShared children;
-    State::Shared state;
-  };
 };
 
 } // namespace facebook::react