i915: Remove unused intelRegion struct

Phew, sure is nice to only have one struct called intel region.

src/mesa/drivers/dri/intel/intel_screen.h

@@ -34,31 +34,8 @@
 #include "i915_drm.h"
 #include "xmlconfig.h"
 
-/* XXX: change name or eliminate to avoid conflict with "struct
- * intel_region"!!!
- */
 typedef struct
 {
-   drm_handle_t handle;
-   drmSize size;                /* region size in bytes */
-   char *map;                   /* memory map */
-   int offset;                  /* from start of video mem, in bytes */
-   unsigned int bo_handle;	/* buffer object id if available, or -1 */
-   /**
-    * Flags if the region is tiled.
-    *
-    * Not included is Y versus X tiling.
-    */
-   GLboolean tiled;
-} intelRegion;
-
-typedef struct
-{
-   intelRegion front;
-   intelRegion back;
-   intelRegion depth;
-   intelRegion tex;
-
    int deviceID;
    int width;
    int height;