development: issue-552: removed extraneous @objc declarations

Sources/iOS/Button.swift

@@ -30,7 +30,6 @@
 
 import UIKit
 
-@objc(Button)
 open class Button: UIButton {
 	/**
      A CAShapeLayer used to manage elements that would be affected by

Sources/iOS/Switch.swift

@@ -59,7 +59,6 @@ public protocol SwitchDelegate {
     func switchDidChangeState(control: Switch, state: SwitchState)
 }
 
-@objc(Switch)
 open class Switch: UIControl {
     /// Will layout the view.
     open var willLayout: Bool {

Sources/iOS/View.swift

@@ -30,7 +30,6 @@
 
 import UIKit
 
-@objc(View)
 open class View: UIView {
 	/**
      A CAShapeLayer used to manage elements that would be affected by