Update Forms.cs

Xamarin.Forms.Platform.iOS/Forms.cs

@@ -38,7 +38,6 @@ namespace Xamarin.Forms
 		static bool? s_isiOS11OrNewer;
 		static bool? s_isiOS13OrNewer;
 		static bool? s_respondsTosetNeedsUpdateOfHomeIndicatorAutoHidden;
-		static bool? s_isiOS13OrNewer;
 #endif
 
 #if __MOBILE__
@@ -92,16 +91,6 @@ namespace Xamarin.Forms
 				return s_respondsTosetNeedsUpdateOfHomeIndicatorAutoHidden.Value;
 			}
 		}
-
-		internal static bool IsiOS13OrNewer
-		{
-			get
-			{
-				if (!s_isiOS13OrNewer.HasValue)
-					s_isiOS13OrNewer = UIDevice.CurrentDevice.CheckSystemVersion(13, 0);
-				return s_isiOS13OrNewer.Value;
-			}
-		}
 #endif
 
 		static IReadOnlyList<string> s_flags;