We don't use boto2 on the api anymore, not since celery 4.0.2
Note - if you run locally with boto2 still installed you'll see errors
that complain about things like:
boto.exception.SQSError: SQSError: 403 Forbidden
<?xml version="1.0"?><ErrorResponse xmlns="http://queue.amazonaws.com/doc/2012-11-05/"><Error><Type>Sender</Type><Code>SignatureDoesNotMatch</Code><Message>Credential should be scoped to a valid region, not 'queue'. </Message><Detail/></Error><RequestId>52207ca4-9131-58cb-89ae-2d45f06623a3</RequestId></ErrorResponse>
If so, make sure boto2 is completely uninstalled.