Removing version check

Author: chickdan

Tree/Tree.playground/Contents.swift

@@ -1,10 +1,5 @@
 //: Playground - noun: a place where people can play
 
-// last checked with Xcode 9.0b4
-#if swift(>=4.2)
-print("Hello, Swift 4.2!")
-#endif
-
 let tree = TreeNode<String>(value: "beverages")
 
 let hotNode = TreeNode<String>(value: "hot")