Remove MBEDTLS_AES_ENCRYPT_ALT

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
diff --git a/tests/scripts/components-configuration-crypto.sh b/tests/scripts/components-configuration-crypto.sh
index f4db664..2f4b55b 100644
--- a/tests/scripts/components-configuration-crypto.sh
+++ b/tests/scripts/components-configuration-crypto.sh
@@ -2243,7 +2243,7 @@
 
     build_test_config_combos ${BUILTIN_SRC_PATH}/aes.o validate_aes_config_variations \
         "MBEDTLS_AES_DECRYPT_ALT" \
-        "MBEDTLS_AES_ROM_TABLES" "MBEDTLS_AES_ENCRYPT_ALT" \
+        "MBEDTLS_AES_ROM_TABLES" \
         "MBEDTLS_AES_FEWER_TABLES" "MBEDTLS_AES_USE_HARDWARE_ONLY" \
         "MBEDTLS_AESNI_C" "MBEDTLS_AESCE_C" "MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH"
 
@@ -2260,7 +2260,7 @@
     scripts/config.py unset MBEDTLS_NIST_KW_C
     build_test_config_combos ${BUILTIN_SRC_PATH}/aes.o validate_aes_config_variations \
         "MBEDTLS_AES_DECRYPT_ALT" \
-        "MBEDTLS_AES_ROM_TABLES" "MBEDTLS_AES_ENCRYPT_ALT" \
+        "MBEDTLS_AES_ROM_TABLES" \
         "MBEDTLS_AES_FEWER_TABLES" "MBEDTLS_AES_USE_HARDWARE_ONLY" \
         "MBEDTLS_AESNI_C" "MBEDTLS_AESCE_C" "MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH"
 }