Hide default blizzard arena frames

[vendethiel]

Why use a parent frame rather than a show/hide call or even setting the alpha?

[mcfry]

That's the frustrating thing. Hiding/clearing the individual frames and their containers was the first thing I tried, but it doesn't work. The individual frames and their container will either altogether not hide, or the calls will throw protected errors and the frames will reappear between rounds in solo shuffle.

[Marshall-Hallenbeck]

Can this be merged in? It's really annoying to have the Blizzard frames showing too. I know sarena hides them properly, which can be found here: https://github.com/stako/sArena/blob/master/sArena.lua#L64