mesa: Remove the Map field from texture images.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Brian Paul <brianp@vmware.com>

src/mesa/swrast/s_context.h

@@ -156,7 +156,6 @@ struct swrast_texture_image
     * initialized to point within Buffer.
     */
    void **ImageSlices;
-   GLubyte *Map;		/**< Pointer to mapped image memory */
 
    /** Malloc'd texture memory */
    GLubyte *Buffer;