boards: arm: twr_ke18f: do not enable Arm SysTick driver by default
boards: arm: twr_ke18f: do not enable Arm SysTick driver by default

Do not enable the Arm SysTick driver by default. Instead, rely on the
default Kconfig settings for the Arm SysTick driver.

Signed-off-by: Henrik Brix Andersen <24a3f13c22635bab658e39fc5f1e63c575328aae@vestas.com>

finikorg/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr