[nrf toup] remove CONFIG_OPENTHREAD_NRF_SECURITY_CHOICE

This option is removed from NCS.

Signed-off-by: Tomi Fontanilles <tomi.fontanilles@nordicsemi.no>

Author: tomi-font

config/nrfconnect/chip-module/Kconfig.defaults

@@ -365,8 +365,6 @@ endif # CHIP_WIFI
 
 choice OPENTHREAD_SECURITY_CONFIG
     default OPENTHREAD_NRF_SECURITY_PSA_CHOICE if CHIP_CRYPTO_PSA
-    default OPENTHREAD_NRF_SECURITY_CHOICE
-
 endchoice
 
 choice RNG_GENERATOR_CHOICE