Remove CK from Sample (#4321)

Summary:
Pull Request resolved: https://github.com/facebook/flipper/pull/4321

^

Reviewed By: antonk52

Differential Revision: D41434959

fbshipit-source-id: 35fe20a2e04af1d6011f0fb9c82aee4eb504fdc7

iOS/Sample/MainViewController.mm

@@ -10,7 +10,6 @@
 #import <FlipperKit/FlipperDiagnosticsViewController.h>
 #import "CommunicationDemoViewController.h"
 #import "NetworkViewController.h"
-#import "RootViewController.h"
 #import "UserDefaultsViewController.h"
 
 @interface MainViewController ()
@@ -29,13 +28,6 @@
   [self.navigationController pushViewController:controller animated:true];
 }
 
-- (IBAction)tappedComponentKitLayout:(UIButton*)sender {
-  RootViewController* rootViewController = [RootViewController new];
-
-  [self.navigationController pushViewController:rootViewController
-                                       animated:true];
-}
-
 - (IBAction)tappedNetworkInspector:(UIButton*)sender {
   UIStoryboard* storyboard = [UIStoryboard storyboardWithName:@"MainStoryBoard"
                                                        bundle:nil];