[Xcode11] [carplay] Updates for beta 5 (#6678)

* carplay updates for b5

* Revert "delete iOS-CarPlay.todo"

This reverts commit 851a424557001c865b8dfe62c920f132cf84db06.

* actually remove iOS-CarPlay.todo

* delete .todo

src/carplay.cs

@@ -681,6 +681,10 @@ namespace CarPlay {
 		[Export ("limitedUserInterfaces")]
 		CPLimitableUserInterface LimitedUserInterfaces { get; }
 
+		[iOS (13,0)]
+		[Export ("contentStyle")]
+		CPContentStyle ContentStyle { get; }
+
 		[Wrap ("WeakDelegate")]
 		[NullAllowed]
 		ICPSessionConfigurationDelegate Delegate { get; set; }

tests/xtro-sharpie/iOS-CarPlay.todo

@@ -1 +0,0 @@
-!missing-selector! CPSessionConfiguration::contentStyle not bound