Removes an action associated with a specific key.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
A string that uniquely identifies a action.
If the node is currently running an action that matches the key, SceneKit removes that action from the node, skipping any remaining animation it would perform but keeping any changes already made to the node.