nandsim: remove unused STATE_DATAOUT_STATUS_M and OPT_SMARTMEDIA

There is no path to switch to STATE_DATAOUT_STATUS_M state, and
OPT_SMARTMEDIA is unused.

This is leftover from commit 0be718e5
("mtd: nand: remove a bunch of unused commands").

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Brian Norris <computersforpeace@gmail.com>