Change unset of MBEDTLS config to more standard method
Signed-off-by: Ben Taylor <ben.taylor@linaro.org>
diff --git a/tests/scripts/components-configuration-crypto.sh b/tests/scripts/components-configuration-crypto.sh
index 0df6455..e5d8905 100644
--- a/tests/scripts/components-configuration-crypto.sh
+++ b/tests/scripts/components-configuration-crypto.sh
@@ -1356,7 +1356,7 @@
# Disable P256M driver, which is on by default, so that analyze_outcomes
# can compare this test with test_tfm_config_p256m_driver_accel_ec
- sed -i '/MBEDTLS_PSA_P256M_DRIVER_ENABLED/d' "$CRYPTO_CONFIG_H"
+ scripts/config.py -f "$CRYPTO_CONFIG_H" unset MBEDTLS_PSA_P256M_DRIVER_ENABLED
msg "build: TF-M config without p256m"
make CFLAGS='-Werror -Wall -Wextra -I../framework/tests/include/spe' tests