[i386] Remove long-obsolete realmode.c file

src/arch/i386/core/realmode.c

@@ -1,23 +0,0 @@
-/* Real-mode interface: C portions.
- *
- * Initial version by Michael Brown <mbrown@fensystems.co.uk>, January 2004.
- */
-
-#include "realmode.h"
-
-/*
- * Copy data to/from base memory.
- *
- */
-
-#ifdef KEEP_IT_REAL
-
-void memcpy_to_real ( segoff_t dest, void *src, size_t n ) {
-
-}
-
-void memcpy_from_real ( void *dest, segoff_t src, size_t n ) {
-
-}
-
-#endif /* KEEP_IT_REAL */