Commented code in MojoExtension.java

### Affected version

HEAD

### Bug description

figure out what to do about this, probably delete it

```
if (parameterConfiguration != null) {
Map attributes = new HashMap<>(parameterConfiguration.getAttributes());
// if (isEmpty(parameterConfiguration.getAttribute("implementation"))
// && !isEmpty(parameter.getImplementation())) {
// attributes.put("implementation", parameter.getImplementation());
// }
parameterConfiguration = XmlNode.newInstance(
parameter.getName(),
parameterConfiguration.getValue(),
attributes,
parameterConfiguration.getChildren(),
parameterConfiguration.getInputLocation());

children.add(parameterConfiguration);
}
}
```

Open MojoExtension.java and inspect the commented-out block in the parameter configuration handling shown in the issue. Determine whether it is obsolete, then remove it if appropriate and verify that the Maven build remains unaffected.

Written by the indexing model from the issue text.