Permanently deletes all compute resources and information related to a stream group. To delete a stream group, specify the unique stream group identifier. During the deletion process, the stream group's status is <code>DELETING</code>. This operation stops streams in progress and prevents new streams from starting. As a best practice, before deleting the stream group, call <a href="https://docs.aws.amazon.com/gameliftstreams/latest/apireference/API_ListStreamSessions.html">ListStreamSessions</a> to check for streams in progress and take action to stop them. When you delete a stream group, any application associations referring to that stream group are automatically removed.