[ClockKit] Ignore framework on iOS. (#9495)

tests/xtro-sharpie/iOS-ClockKit.ignore

@@ -1,3 +1,4 @@
+# was added in iOS but it should have not, issue: https://github.com/xamarin/maccore/issues/2300
 !missing-enum! CLKWatchFaceLibraryErrorCode not bound
 !missing-field! CLKWatchFaceLibraryErrorDomain not bound
 !missing-selector! CLKWatchFaceLibrary::addWatchFaceAtURL:completionHandler: not bound