Modifies an existing option group.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/rds/remove-option-from-option-group.html
| aws rds remove-option-from-option-group \ |
| Working with Option Groups - Amazon Relational Database Service : http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithOptionGroups.html |