class RuboCop::Cop::Chef::RedundantCode::AttributeMetadata

The attribute metadata.rb method is not used and is unnecessary in cookbooks.

@example

### incorrect in metadata.rb:

 attribute 'zookeeper_bridge/server',
           display_name: 'zookeeper server',
           description: 'Zookeeper server address.',
           type: 'string',
           required: 'optional',
           default: '"127.0.0.1:2181"'