Remove CxxSharedModuleWrapper from open-source (#52672)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52672

This was used internally to work around some limitations of the bridge lifecycle. Given that we now have C++ TurboModules which are much more versatile, let's remove unnecessary concepts externally, as we move towards deprecating legacy C++ modules entirely.

Changelog: [General][Breaking] Removed CxxSharedModuleWrapper

Reviewed By: rshest

Differential Revision: D78484221

fbshipit-source-id: 95ed46b597dac55d823b70abe196264ce5b326ab

packages/react-native/ReactAndroid/src/main/jni/react/jni/CxxSharedModuleWrapper.h

@@ -1,37 +0,0 @@
-/*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <cxxreact/SharedProxyCxxModule.h>
-
-#include "CxxModuleWrapperBase.h"
-
-namespace facebook::react {
-
-class CxxSharedModuleWrapper : public CxxModuleWrapperBase {
- public:
-  std::string getName() override {
-    return shared_->getName();
-  }
-
-  std::unique_ptr<xplat::module::CxxModule> getModule() override {
-    // Instead of just moving out the stored CxxModule, this creates a
-    // proxy which passes calls to the shared stored CxxModule.
-
-    return std::make_unique<xplat::module::SharedProxyCxxModule>(shared_);
-  }
-
- protected:
-  explicit CxxSharedModuleWrapper(
-      std::unique_ptr<xplat::module::CxxModule> module)
-      : shared_(std::move(module)) {}
-
-  std::shared_ptr<xplat::module::CxxModule> shared_;
-};
-
-} // namespace facebook::react

packages/react-native/ReactCommon/cxxreact/SharedProxyCxxModule.h

@@ -1,40 +0,0 @@
-/*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <memory>
-
-#include <cxxreact/CxxModule.h>
-
-namespace facebook::xplat::module {
-
-// Allows a Cxx-module to be shared or reused across multiple React instances
-// Caveat: the setInstance call is not forwarded, so usages of getInstance
-// inside your module (e.g. dispatching events) will always be nullptr.
-class SharedProxyCxxModule : public CxxModule {
- public:
-  explicit SharedProxyCxxModule(std::shared_ptr<CxxModule> shared)
-      : shared_(shared) {}
-
-  std::string getName() override {
-    return shared_->getName();
-  }
-
-  auto getConstants() -> std::map<std::string, folly::dynamic> override {
-    return shared_->getConstants();
-  }
-
-  auto getMethods() -> std::vector<Method> override {
-    return shared_->getMethods();
-  }
-
- private:
-  std::shared_ptr<CxxModule> shared_;
-};
-
-} // namespace facebook::xplat::module