winex11.drv: remove an outdated comment

[Austin English]

See bug 7681.

-- 
-Austin
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diff --git a/dlls/winex11.drv/xrender.c b/dlls/winex11.drv/xrender.c
index f4b68ff..f8f3ba9 100644
--- a/dlls/winex11.drv/xrender.c
+++ b/dlls/winex11.drv/xrender.c
@@ -639,8 +639,7 @@ void X11DRV_XRender_DeleteDC(X11DRV_PDEVICE *physDev)
 /***********************************************************************
  *   X11DRV_XRender_UpdateDrawable
  *
- * This gets called from X11DRV_SetDrawable and X11DRV_SelectBitmap.
- * It deletes the pict and tile when the drawable changes.
+ * Deletes the pict and tile when the drawable changes.
  */
 void X11DRV_XRender_UpdateDrawable(X11DRV_PDEVICE *physDev)
 {