Staging: xgifb: remove XGI.h

This was not included anywhere and just defined a debugging macro.
Signed-off-by: NBill Pemberton <wfp5p@virginia.edu>
Cc: Arnaud Patard <apatard@mandriva.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/xgifb/XGI.h

-#ifndef _XGI_H
-#define _XGI_H
-
-#if 1
-#define TWDEBUG(x)
-#else
-#define TWDEBUG(x) printk(KERN_INFO x "\n");
-#endif
-
-#endif