samples: bluetooth: fast_pair: locator_tag: Drop MBEDTLS_CFG_FILE

The CONFIG_MBEDTLS_CFG_FILE Kconfig is enabled by default in the
MCUboot image and does not require explicit configuration. The explicit
configuration also throws an error for non-default MCUboot signatures
(such as RSA) that do not depend on the MBEDTLS Kconfig and do not
enable it.

Jira: NCSDK-29943

Signed-off-by: Mateusz Kapala <[email protected]>

Author: mkapala-nordic

samples/bluetooth/fast_pair/locator_tag/sysbuild/mcuboot/prj.conf

@@ -7,7 +7,6 @@
 CONFIG_PM=n
 
 CONFIG_MAIN_STACK_SIZE=10240
-CONFIG_MBEDTLS_CFG_FILE="mcuboot-mbedtls-cfg.h"
 
 CONFIG_FLASH=y
 CONFIG_FPROTECT=y