sim: always enable modulo memory

Having this be a config option doesn't make sense: the code size is
pretty much the same (as all the logic is still active), and if it's
disabled, the sim throws an error if you try to use it.  That means
we can't break sims that weren't using it before by enabling it all
the time.

sim/mips/sim-main.h

@@ -22,7 +22,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* hobble some common features for moment */
 #define WITH_WATCHPOINTS 1
-#define WITH_MODULO_MEMORY 1
 
 
 #define SIM_CORE_SIGNAL(SD,CPU,CIA,MAP,NR_BYTES,ADDR,TRANSFER,ERROR) \