Back out "Enable Multiple Sheet Presentation in React Native" (#46433)

Summary:
Pull Request resolved: #46433

Original commit changeset: 53667cf1a75e

Original Phabricator Diff: D62143463

Changelog: [Internal]  revert previous modal presentation improvement

Reviewed By: sammy-SC

Differential Revision: D62474039

fbshipit-source-id: b510c0460c06ab9d595d414d4ea32acd224871bc

packages/react-native/React/Fabric/Mounting/ComponentViews/Modal/RCTModalHostViewComponentView.mm

@@ -134,9 +134,7 @@ - (void)presentViewController:(UIViewController *)modalViewController
                    completion:(void (^)(void))completion
 {
   UIViewController *controller = [self reactViewController];
-  [[self _topMostViewControllerFrom:controller] presentViewController:modalViewController
-                                                             animated:animated
-                                                           completion:completion];
+  [controller presentViewController:modalViewController animated:animated completion:completion];
 }
 
 - (void)dismissViewController:(UIViewController *)modalViewController
@@ -276,26 +274,6 @@ - (void)unmountChildComponentView:(UIView<RCTComponentViewProtocol> *)childCompo
   [childComponentView removeFromSuperview];
 }
 
-#pragma mark - Private
-
-- (UIViewController *)_topMostViewControllerFrom:(UIViewController *)rootViewController
-{
-  UIViewController *topController = rootViewController;
-  while (topController.presentedViewController) {
-    topController = topController.presentedViewController;
-  }
-  if ([topController isKindOfClass:[UINavigationController class]]) {
-    UINavigationController *navigationController = (UINavigationController *)topController;
-    topController = navigationController.visibleViewController;
-    return [self _topMostViewControllerFrom:topController];
-  } else if ([topController isKindOfClass:[UITabBarController class]]) {
-    UITabBarController *tabBarController = (UITabBarController *)topController;
-    topController = tabBarController.selectedViewController;
-    return [self _topMostViewControllerFrom:topController];
-  }
-  return topController;
-}
-
 @end
 
 #ifdef __cplusplus