gdi32: Remove broken check for WinXP.

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
http://testbot.winehq.org/JobDetails.pl?Key=6910

Your paranoid android.


=== W2KPROSP4 (32 bit font) ===
Failure running script in VM: Exceeded timeout limit of 315 sec