Update Contents.swift

Author: kelvinlauKL

HaversineDistance/HaversineDistance.playground/Contents.swift

@@ -1,8 +1,4 @@
 import UIKit
-// last checked with Xcode 9.04
-#if swift(>=4)
-print("Hello, Swift 4!")
-#endif
 
 func haversineDinstance(la1: Double, lo1: Double, la2: Double, lo2: Double, radius: Double = 6367444.7) -> Double {