[PATCH] block: floppy98 removal, really.

floppy98 went out together with the rest of PC98 subarch.  Remove stale
Makefile entry that remained.

Signed-off-by: Arthur Othieno <apgo@patchbomb.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>