This operation deletes the access policy associated with the specified
vault. The operation is eventually consistent; that is, it might take
some time for Amazon S3 Glacier to completely remove the access policy,
and you might still see the effect of the policy for a short time after
you send the delete request.
This operation is idempotent. You can invoke delete multiple times, even
if there is no policy associated with the vault. For more information
about vault access policies, see Amazon Glacier Access Control with Vault Access Policies.