Removed UIView (CKComponentAttachController)

Summary: Remove ObjC categories so we can strip dead code

Reviewed By: kfirapps

Differential Revision: D14665041

fbshipit-source-id: 243dee61a5b7cfd854191bfb5fa3a570b4ac1a4b

iOS/Plugins/FlipperKitLayoutPlugin/FlipperKitLayoutComponentKitSupport/SKComponentRootViewDescriptor.mm

@@ -33,11 +33,8 @@
 }
 
 - (NSUInteger)childCountForNode:(CKComponentRootView *)node {
-  if ([node respondsToSelector:@selector(ck_attachState)]) {
-    const auto state = [node ck_attachState];
-    return state == nil ? 0 : 1;
-  }
-  return 0;
+  const auto state = CKGetAttachStateForView(node);
+  return state == nil ? 0 : 1;
 }
 
 - (id)childForNode:(CKComponentRootView *)node atIndex:(NSUInteger)index {