Marks a context for removal.
- iOS 11.4+
The context to remove.
If your context hierarchy changes, either because your app’s content is dynamic, or as a result of an app update, you might need to remove old contexts from the data store. Call this method to mark a context for removal. Call the
save(completion:) method to commit the change.
When you remove a context, the framework removes all of its decendants as well.