Deletes stack instances for the specified accounts, in the specifiedregions.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/cloudformation/delete-stack-instances.html
aws cloudformation delete-stack-instances --stack-set-name my-awsconfig-stackset --accounts '["account_ID_1" |
| Delete Stack Sets - AWS CloudFormation : http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/stackinstances-delete.html |
| aws cloudformation delete-stack-instances --stack-set-name my-codedeploy-application --accounts YOUR_ACCOUNT_ID --regions |
| CloudFormation StackSets: automated cross-account/region deployments - Sander Knape : http://sanderknape.com/2017/07/cloudformation-stacksets-automated-cross-account-region-deployments/ |