ddraw: Remove unused code for ChangeUniquenessValue.

[Sebastian Lackner]

The code is obviously wrong (arguments for InterlockedCompareExchange are swapped), and moreover is currently noop because "if (old_uniqueness_value == 0) break;" has the effect that the counter is never updated.

---
 dlls/ddraw/ddraw_private.h |  1 -
 dlls/ddraw/surface.c       | 31 +------------------------------
 2 files changed, 1 insertion(+), 31 deletions(-)
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