Kalix managed code has lots of warnings

The generated classes by Kalix *View, *Provider, *Router etc have lots of warnings, especially from unused imports. And it’s hard to see the warnings from my code.

Would it be okay with you if I created a pull request on GitHub - lightbend/kalix-jvm-sdk: Java and Scala SDKs for Kalix to remove all these warnings?

For sure, feel free to PR it. Contribuitions are welcome. If you can create an issue to go along, that would be perfect. Thanks.