Remove unused ReactFabricInternals API (#47454)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/47454

As far as I can tell, this module is now unused both within the codebase and externally. Delete to reduce our public API surface (deep module is an accessible import path).

Changelog:
[General][Breaking] - Remove ReactFabricInternals module

Reviewed By: cortinico

Differential Revision: D65535378

fbshipit-source-id: 25ee16ccc637815ffe1c69a5fc546bd3e11d1689

packages/react-native/Libraries/ReactNative/ReactFabricInternals.js

@@ -1,17 +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.
- *
- * @flow strict-local
- * @format
- */
-
-'use strict';
-
-const createReactNativeComponentClass = require('../Renderer/shims/createReactNativeComponentClass');
-
-module.exports = {
-  createReactNativeComponentClass,
-};

packages/react-native/Libraries/__tests__/__snapshots__/public-api-test.js.snap

@@ -7525,14 +7525,6 @@ declare module.exports: UIManagerJS;
 "
 `;
 
-exports[`public API should not change unintentionally Libraries/ReactNative/ReactFabricInternals.js 1`] = `
-"declare const createReactNativeComponentClass: $FlowFixMe;
-declare module.exports: {
-  createReactNativeComponentClass: createReactNativeComponentClass,
-};
-"
-`;
-
 exports[`public API should not change unintentionally Libraries/ReactNative/ReactFabricPublicInstance/ReactFabricHostComponent.js 1`] = `
 "declare export default class ReactFabricHostComponent
   implements INativeMethods