Revert "[iOS] Large title text attributes (#2112)" (#2603)

This reverts commit f7ec9ee840.

docs/styling-the-navigator.md

   navBarRightButtonColor: 'blue', // Change color of right nav bar button
   navBarRightButtonFontWeight: '600', // Change font weight of right nav bar button
 
-  navBarLargeTextColor: '#000000', // change the text color of large titles
-  navBarLargeTextFontSize: 34, // change the font size of large titles
-  navBarLargeTextFontFamily: 'font-name', // Changes the large title font
-
   topBarShadowColor: 'blue' // Sets shadow of the navbar, Works only when topBarElevationShadowEnabled: true
   topBarShadowOpacity: 0.5, // Sets shadow opacity on the navbar, Works only when topBarElevationShadowEnabled: true
   topBarShadowOffset: 12, // Sets shadow offset on the navbar, Works only when topBarElevationShadowEnabled: true

ios/RCCViewController.m

     viewController.navigationController.navigationBar.barTintColor = nil;
   }
   
-  NSMutableDictionary *titleTextAttributes = [RCTHelpers textAttributesFromDictionary:self.navigatorStyle
-                                                                           withPrefix:@"navBarText"
-                                                                             baseFont:[UIFont boldSystemFontOfSize:17]];
+  NSMutableDictionary *titleTextAttributes = [RCTHelpers textAttributesFromDictionary:self.navigatorStyle withPrefix:@"navBarText" baseFont:[UIFont boldSystemFontOfSize:17]];
   [self.navigationController.navigationBar setTitleTextAttributes:titleTextAttributes];
-
-  if ([self.navigationController.navigationBar respondsToSelector:@selector(setLargeTitleTextAttributes:)]) {
-    // As defined in Apple's UI Design Resources: https://developer.apple.com/design/resources/
-    UIFont *largeBaseFont = [UIFont boldSystemFontOfSize:34];
-    NSMutableDictionary *largeTitleTextAttributes = [RCTHelpers textAttributesFromDictionary:self.navigatorStyle
-                                                                                  withPrefix:@"navBarLargeText"
-                                                                                    baseFont:largeBaseFont];
-    [self.navigationController.navigationBar setLargeTitleTextAttributes:largeTitleTextAttributes];
-  }
   
   NSMutableDictionary *navButtonTextAttributes = [RCTHelpers textAttributesFromDictionary:self.navigatorStyle withPrefix:@"navBarButton"];
   NSMutableDictionary *leftNavButtonTextAttributes = [RCTHelpers textAttributesFromDictionary:self.navigatorStyle withPrefix:@"navBarLeftButton"];