[SPARC64]: Remove unused asm-sparc64/numnodes.h

This is handled with config options now.
Signed-off-by: David S. Miller <davem@davemloft.net>

include/asm-sparc64/numnodes.h

-#ifndef _SPARC64_NUMNODES_H
-#define _SPARC64_NUMNODES_H
-
-#define NODES_SHIFT	0
-
-#endif /* !(_SPARC64_NUMNODES_H) */