ARM: shmobile: kzm9g: defconfig: do not enable PREEMPT

The motivation for this change is:

* It is consistent with all other shmobile boards and;
* Allows the kzm9g-reference code to work with CONFIG_SMP
  and thus the new defconfig
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/configs/kzm9g_defconfig

@@ -33,7 +33,6 @@ CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_SMP=y
 CONFIG_SCHED_MC=y
-CONFIG_PREEMPT=y
 CONFIG_AEABI=y
 # CONFIG_OABI_COMPAT is not set
 CONFIG_HIGHMEM=y