Remove example definition

Author: Kerr Marin Miller

swift/README.md

@@ -340,55 +340,6 @@ Classes have [reference semantics](https://developer.apple.com/library/mac/docum
 
 Sometimes, things should be structs but need to conform to `AnyObject` or are historically modeled as classes already (`NSDate`, `NSSet`). Try to follow these guidelines as closely as possible.
 
-### Example definition
-
-Here's an example of a well-styled class definition:
-
-```swift
-class Circle: Shape {
-  var x: Int
-  var y: Int
-  var radius: Double
-  var diameter: Double {
-    get {
-      return radius * 2
-    }
-    set {
-      radius = newValue / 2
-    }
-  }
-
-  init(x: Int, y: Int, radius: Double) {
-    self.x = x
-    self.y = y
-    self.radius = radius
-  }
-
-  convenience init(x: Int, y: Int, diameter: Double) {
-    self.init(x: x, y: y, radius: diameter / 2)
-  }
-
-  func describe() -> String {
-    return "I am a circle at \(centerString()) with an area of \(computeArea())"
-  }
-
-  override func computeArea() -> Double {
-    return M_PI * radius * radius
-  }
-
-  private func centerString() -> String {
-    return "(\(x),\(y))"
-  }
-}
-```
-
-The example above demonstrates the following style guidelines:
-
- + Specify types for properties, variables, constants, argument declarations and other statements with a space after the colon but not before, e.g. `x: Int`, and `Circle: Shape`.
- + Define multiple variables and structures on a single line if they share a common purpose / context.
- + Indent getter and setter definitions and property observers.
- + Don't add modifiers such as `internal` when they're already the default. Similarly, don't repeat the access modifier when overriding a method.
-
 ### Use of Self
 
 For conciseness, avoid using `self` since Swift does not require it to access an object's properties or invoke its methods.