Do Not Error on Resource Not Found

[ekristen]

time="2023-04-13T16:44:45Z" level=error msg="There are resources in failed state, but none are ready for deletion, anymore."
time="2023-04-13T16:44:45Z" level=error msg="storage.AccountsClient#ListByResourceGroup: Failure responding to request: StatusCode=404 -- Original Error: autorest/azure: Service returned an error. Status=404 Code=\"ResourceGroupNotFound\" Message=\"Resource group 'xxxx-7a6ba333862f' could not be found.\"" 

This is likely due to a race condition of deleting resource groups at the same time.