comment out NSError bridging in CloudKit Overlay

Author: Jacob Mizraji

stdlib/public/SDK/CloudKit/CloudKit.swift

@@ -1,7 +1,7 @@
 @_exported import CloudKit
 import Foundation
 
-@available(OSX, introduced: 10.10) @available(iOS, introduced: 8.0)
-extension CKErrorCode : _BridgedNSError {
-  public static var _nsErrorDomain: String { return CKErrorDomain }
-}
+// @available(OSX, introduced: 10.10) @available(iOS, introduced: 8.0)
+// extension CKErrorCode : _BridgedNSError {
+//   public static var _nsErrorDomain: String { return CKErrorDomain }
+// }