Deletes an attendee from the specified Amazon Chime SDK meeting and deletes their <code>JoinToken</code>. Attendees are automatically deleted when a Amazon Chime SDK meeting is deleted. For more information about the Amazon Chime SDK, see <a href="https://docs.aws.amazon.com/chime-sdk/latest/dg/meetings-sdk.html">Using the Amazon Chime SDK</a> in the <i>Amazon Chime Developer Guide</i>.