remove cxx TM autolinking (#45967)

Summary:
Changelog: [iOS][Android][Breaking]

Pull Request resolved: #45967

this was a meaningful exploration, but since we have support in TM for jsi runtime access and that's been widely advertised and accepted, let's get rid of this. it's a bit hacky and hard to use (shown by no one using it), so i want to stop any possibility of its usage.

if interested in accessing jsi::Runtime via a native module, please consider the following options:
- [Android] BindingsInstaller: #44526
- [iOS] RCTTurboModuleWithJSIBindings: #44486
- C++ TurboModules (no autolinking): https://github.com/reactwg/react-native-new-architecture/blob/main/docs/turbo-modules-xplat.md

Reviewed By: christophpurrer

Differential Revision: D61059182

fbshipit-source-id: da5d74e2b6161ea7e8dd5f664ae0eb927bb1e2c3

packages/react-native/ReactAndroid/src/main/jni/react/turbomodule/ReactCommon/TurboModuleManager.cpp

@@ -15,7 +15,6 @@
 #include <jsi/jsi.h>
 
 #include <ReactCommon/BindingsInstallerHolder.h>
-#include <ReactCommon/CxxTurboModuleUtils.h>
 #include <ReactCommon/JavaInteropTurboModule.h>
 #include <ReactCommon/TurboCxxModule.h>
 #include <ReactCommon/TurboModuleBinding.h>
@@ -169,14 +168,6 @@ std::shared_ptr<TurboModule> TurboModuleManager::getTurboModule(
     return cxxModule;
   }
 
-  auto& cxxTurboModuleMapProvider = globalExportedCxxTurboModuleMap();
-  auto it = cxxTurboModuleMapProvider.find(name);
-  if (it != cxxTurboModuleMapProvider.end()) {
-    auto turboModule = it->second(jsCallInvoker_);
-    turboModuleCache_.insert({name, turboModule});
-    return turboModule;
-  }
-
   static auto getTurboJavaModule =
       javaPart->getClass()
           ->getMethod<jni::alias_ref<JTurboModule>(const std::string&)>(

packages/react-native/ReactCommon/react/nativemodule/core/platform/ios/ReactCommon/RCTTurboModuleManager.mm

@@ -29,7 +29,6 @@
 #import <React/RCTPerformanceLogger.h>
 #import <React/RCTRuntimeExecutorModule.h>
 #import <React/RCTUtils.h>
-#import <ReactCommon/CxxTurboModuleUtils.h>
 #import <ReactCommon/RCTTurboModuleWithJSIBindings.h>
 #import <ReactCommon/TurboCxxModule.h>
 #import <ReactCommon/TurboModulePerfLogger.h>
@@ -329,14 +328,6 @@ - (instancetype)initWithBridgeProxy:(RCTBridgeProxy *)bridgeProxy
     TurboModulePerfLogger::moduleCreateFail(moduleName, moduleId);
   }
 
-  auto &cxxTurboModuleMapProvider = globalExportedCxxTurboModuleMap();
-  auto it = cxxTurboModuleMapProvider.find(moduleName);
-  if (it != cxxTurboModuleMapProvider.end()) {
-    auto turboModule = it->second(_jsInvoker);
-    _turboModuleCache.insert({moduleName, turboModule});
-    return turboModule;
-  }
-
   /**
    * Step 2: Look for platform-specific modules.
    */