Removes one or more nodes from a DAX cluster.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/dax/decrease-replication-factor.html
| aws dax decrease-replication-factor \ |
| Managing DAX Clusters - Amazon DynamoDB : http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DAX.cluster-management.html |