clean up contextContainer->insert("ReactNativeConfig") from oss

Summary:
Changelog: [Internal]

we don't need any of these now since no one is calling `contextContainer_->at<std::shared_ptr>("ReactNativeConfig")` anymore

Differential Revision: D65304976

packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.mm

@@ -26,7 +26,6 @@
 #import <React/RCTFabricSurface.h>
 #import <React/RCTSurfaceHostingProxyRootView.h>
 #import <React/RCTSurfacePresenter.h>
-#import <ReactCommon/RCTContextContainerHandling.h>
 #if USE_HERMES
 #import <ReactCommon/RCTHermesInstance.h>
 #else
@@ -35,7 +34,6 @@
 #import <ReactCommon/RCTHost+Internal.h>
 #import <ReactCommon/RCTHost.h>
 #import <ReactCommon/RCTTurboModuleManager.h>
-#import <react/config/ReactNativeConfig.h>
 #import <react/renderer/runtimescheduler/RuntimeScheduler.h>
 #import <react/renderer/runtimescheduler/RuntimeSchedulerCallInvoker.h>
 #import <react/runtime/JSRuntimeFactory.h>
@@ -99,13 +97,8 @@ - (instancetype)initWithBundleURLBlock:(RCTBundleURLBlock)bundleURLBlock
 
 @end
 
-@interface RCTRootViewFactory () <RCTContextContainerHandling> {
-  std::shared_ptr<const facebook::react::ReactNativeConfig> _reactNativeConfig;
-  facebook::react::ContextContainer::Shared _contextContainer;
-}
-@end
-
 @interface RCTRootViewFactory () <RCTCxxBridgeDelegate> {
+  facebook::react::ContextContainer::Shared _contextContainer;
   std::shared_ptr<facebook::react::RuntimeScheduler> _runtimeScheduler;
 }
 @end
@@ -124,8 +117,6 @@ - (instancetype)initWithTurboModuleDelegate:(id<RCTTurboModuleManagerDelegate>)t
     _configuration = configuration;
     _hostDelegate = hostdelegate;
     _contextContainer = std::make_shared<const facebook::react::ContextContainer>();
-    _reactNativeConfig = std::make_shared<const facebook::react::EmptyReactNativeConfig>();
-    _contextContainer->insert("ReactNativeConfig", _reactNativeConfig);
     _turboModuleManagerDelegate = turboModuleManagerDelegate;
   }
   return self;
@@ -281,26 +272,19 @@ - (RCTHost *)createReactHost:(NSDictionary *)launchOptions
   [reactHost setBundleURLProvider:^NSURL *() {
     return [weakSelf bundleURL];
   }];
-  [reactHost setContextContainerHandler:self];
   [reactHost start];
   return reactHost;
 }
 
 - (std::shared_ptr<facebook::react::JSRuntimeFactory>)createJSRuntimeFactory
 {
 #if USE_HERMES
-  return std::make_shared<facebook::react::RCTHermesInstance>(
-      _reactNativeConfig, nullptr, /* allocInOldGenBeforeTTI */ false);
+  return std::make_shared<facebook::react::RCTHermesInstance>(nullptr, nullptr, /* allocInOldGenBeforeTTI */ false);
 #else
   return std::make_shared<facebook::react::RCTJscInstance>();
 #endif
 }
 
-- (void)didCreateContextContainer:(std::shared_ptr<facebook::react::ContextContainer>)contextContainer
-{
-  contextContainer->insert("ReactNativeConfig", _reactNativeConfig);
-}
-
 - (NSArray<id<RCTBridgeModule>> *)extraModulesForBridge:(RCTBridge *)bridge
 {
   if (_configuration.extraModulesForBridge != nil) {

packages/react-native/ReactAndroid/src/main/jni/react/fabric/FabricUIManagerBinding.cpp

@@ -473,7 +473,6 @@ void FabricUIManagerBinding::installFabricUIManager(
         globalJavaUiManager);
   };
 
-  contextContainer->insert("ReactNativeConfig", config);
   contextContainer->insert("FabricUIManager", globalJavaUiManager);
 
   // Keep reference to config object and cache some feature flags here