woocommerce/includes/libraries/action-scheduler/classes/ActionScheduler_FinishedAction.php

<?php

/**
 * Class ActionScheduler_FinishedAction
 */
class ActionScheduler_FinishedAction extends ActionScheduler_Action {

	public function execute() {
		// don't execute
	}

	public function is_finished() {
		return TRUE;
	}
}