Delete version sniffing logic

[Stefan Dösinger]

> Well, Win98 was a deliberate choice. Just before WineConf we set
> the Crossover nightlies to Win2k by default and all our tests immediately
> went RED FAIL ;)
>
> Basically, when you set win2k by default, tons and tons of stuff breaks
> because apps become a lot more demanding. For now it makes sense to leave
> WineHQ at win98 and let CodeWeavers take the brunt of the pain. In fact it
> looks like we may not be able to get the whole thing running in win2k mode
> by default for Crossover Office 5, we'll see.
>
> Once we succesfully make the transition a ton of bugs and new functions
> will already have been implemented, and maybe it'll make sense to go win2k
> by default in regular Wine there too.
>
> Of course AJ may decide that the only way to get the bugs fixed is to
> change the default right away :)

Agreed.

Stefan