Revert D4386906: [YogaKit] Improved the objective-c and swift api

Summary: This reverts commit 05ac0e571ef3a8ff0be31469e449a7b23f102218

Differential Revision: D4386906

fbshipit-source-id: adac0d8e71ce9f3442f3bfd14b5157f88367c998

YogaKit/YogaKitSample/YogaKitSample/SwiftViewController.swift

@@ -1,40 +0,0 @@
-/**
- * Copyright 2014-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the license found in the
- * LICENSE-examples file in the root directory of this source tree.
- */
-
-import UIKit
-
-class SwiftViewController: UIViewController {
-  override func viewDidLoad() {
-    let root = self.view!
-    root.backgroundColor = .red
-    root.yoga.isEnabled = true
-    root.yoga.width = self.view.bounds.size.width
-    root.yoga.height = self.view.bounds.size.height
-    root.yoga.alignItems = .center
-    root.yoga.justifyContent = .center
-
-    let child1 = UIView()
-    child1.backgroundColor = .blue
-    child1.yoga.isEnabled = true
-    child1.yoga.width = 100
-    child1.yoga.height = 10
-
-    let child2 = UIView()
-    child2.backgroundColor = .green
-    child2.frame = CGRect(x: 0, y: 0, width: 200, height: 100)
-
-    let child3 = UIView()
-    child3.backgroundColor = .yellow
-    child3.frame = CGRect(x: 0, y: 0, width: 100, height: 100)
-
-    child2.addSubview(child3)
-    root.addSubview(child1)
-    root.addSubview(child2)
-    root.yoga.applyLayout()
-  }
-}