[nrf noup] Remove secure boot debug Kconfig

fixup! [nrf noup] zephyr: add 'minimal' configuration files

Removes setting a now removed Kconfig option

Signed-off-by: Jamie McCrae <[email protected]>

Author: nordicjm

boot/zephyr/prj_minimal.conf

@@ -34,7 +34,6 @@ CONFIG_NCS_SAMPLES_DEFAULTS=n
 CONFIG_NO_RUNTIME_CHECKS=y
 CONFIG_NRF_RTC_TIMER=n
 CONFIG_PRINTK=n
-CONFIG_SECURE_BOOT_DEBUG=n
 CONFIG_SERIAL=n
 CONFIG_SIZE_OPTIMIZATIONS=y
 CONFIG_SYS_CLOCK_EXISTS=n