tests/data: remove debug scene
tests/data: remove debug scene

The presence of this scene is the source of a lot of complexity in these
tests, and doesn't serve much purpose. It was kind of useful when the
field declarations were the user responsibility, but that's not the case
anymore.

gopro/gopro-lib-node.gl,gopro/gopro-lib-node.gl,gopro/gopro-lib-node.gl,gopro/gopro-lib-node.gl