Unregisters the specified file presenter object.
- iOS 5.0+
- macOS 10.7+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
The file presenter object to unregister. If the object is not currently registered, this method does nothing.
Call this method to unregister file presenters before those objects are deallocated, even in a garbage-collected application.