Remove NoiseBox and ScrollBox (or move them to oak grove)

[200sc]

Both render.NoiseBox and render.ScrollBox are early implementations of custom renderable types that have limited use and don't need to be a part of the main engine. They can be in oak grove as examples of extensions instead of as things that everyone using the engine needs polluting their API.

[200sc]

These types have been removed in v3.0.0-alpha.1