[xtro] Remove dead comment in ignore file. (#14078)

tests/xtro-sharpie/api-annotations-dotnet/macOS-CoreLocation.ignore

@@ -2,5 +2,3 @@
 !missing-protocol-member! CLLocationManagerDelegate::locationManager:didRangeBeacons:inRegion: not found
 !missing-protocol-member! CLLocationManagerDelegate::locationManager:rangingBeaconsDidFailForRegion:withError: not found
 !missing-selector! CLBeaconRegion::initWithUUID:identifier: not bound
-
-# Fixed in XAMCORE_4_0