Cancel a running training job associated with the given predictive_query_id. Cancellation is an asynchronous "best effort" operation. Users can call GET "predictive_queries/{predictive_query_id}/training_status" to verify if the training job has been successfully cancelled. No action will be taken in the following cases:

• No training job is actively running.
• The job has already been completely, regardless of whether the training succeeded or failed.