SQS: Fixes #2091 queue_delete() method doesn't actually delete the queue

[ivanprjcts]

Fix for issue #2091

.queue_delete() method of SQS channel is not actually deleting the queue. See implementation here.

    def _delete(self, queue, *args, **kwargs):
        """Delete queue by name."""
        if self.predefined_queues:
            return
        super()._delete(queue)
        self._queue_cache.pop(queue, None)

• I managed to call delete_queue using sqs client (boto3).
• I wrapped logic to resolve queue URL into a reusable method _resolve_queue_url method for reusability.
• I added unit tests coverage for new changes.

I took the liberty of creating a new method (_resolve_queue_url). I found it convenient to delegate the responsibility of resolving the queue URL to a separate method.

Thank you :)