Revert "wined3d: Preload target in ActivateContext() for ORM_BACKBUFFER/ORM_PBUFFER."

[Vitaliy Margolen]

Stefan Dösinger wrote:
>> Two Preload calls in FindContext. And bug 13079:
>> http://bugs.winehq.org/show_bug.cgi?id=13079
> Ah, I think 13079 is an entirely different bug. Vertex buffers aren't
> involved in offscreen rendering readback, nor in render target selection.
> (Currently. D3D10 changes that)

It could be different - I can't tell for sure. This game doesn't produce any 
reasonable crash dump, just a message that it crashed (so not even winedbg's 
output). However the problems start with call to... Preload.

Vitaliy.