x11drv: cleanup not longer used data on X11DRV_PDEVICE.

dlls/x11drv/init.c

@@ -164,8 +164,6 @@ BOOL X11DRV_DeleteDC( X11DRV_PDEVICE *physDev )
     DeleteObject( physDev->region );
     wine_tsx11_lock();
     XFreeGC( gdi_display, physDev->gc );
-    while (physDev->used_visuals-- > 0)
-        XFree(physDev->visuals[physDev->used_visuals]);
     wine_tsx11_unlock();
     HeapFree( GetProcessHeap(), 0, physDev );
     return TRUE;

dlls/x11drv/x11drv.h

@@ -140,8 +140,6 @@ typedef struct
     int           depth;       /* bit depth of the DC */
     int           exposures;   /* count of graphics exposures operations */
     struct dce   *dce;         /* opaque pointer to DCE */
-    XVisualInfo  *visuals[MAX_PIXELFORMATS];
-    int           used_visuals;
     int           current_pf;
     XRENDERINFO   xrender;
 } X11DRV_PDEVICE;