Deletes an alias for the specified bot.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/lex-models/delete-bot-alias.html
| aws lex-models delete-bot-alias \ |
| Versioning and Aliases - Amazon Lex : http://docs.aws.amazon.com/lex/latest/dg/gs-cli-clean-up.html |