Kill news/sport container skin

This container skin is not used anywhere anymore.

@stephanfowler will there be an issue with the tool if I remove it, as it's referenced in 3 fronts (au/sport uk/sport and us/sport)?


![killer-rabbit](https://cloud.githubusercontent.com/assets/85783/3089728/8e719914-e582-11e3-94d2-b032e953b5b5.gif)