Remove MBEDTLS_AES_SETKEY_DEC_ALT

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
diff --git a/tf-psa-crypto/drivers/builtin/src/aes.c b/tf-psa-crypto/drivers/builtin/src/aes.c
index 40a1c24..f7d6a61 100644
--- a/tf-psa-crypto/drivers/builtin/src/aes.c
+++ b/tf-psa-crypto/drivers/builtin/src/aes.c
@@ -44,9 +44,8 @@
  * This is a convenience shorthand macro to check if we need reverse S-box and
  * reverse tables. It's private and only defined in this file.
  */
-#if (!defined(MBEDTLS_AES_DECRYPT_ALT) || \
-    (!defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY))) && \
-    !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
+#if (!defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)) \
+    && !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 #define MBEDTLS_AES_NEED_REVERSE_TABLES
 #endif
 
@@ -650,7 +649,7 @@
 /*
  * AES key schedule (decryption)
  */
-#if !defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 int mbedtls_aes_setkey_dec(mbedtls_aes_context *ctx, const unsigned char *key,
                            unsigned int keybits)
 {
@@ -719,7 +718,7 @@
 
     return ret;
 }
-#endif /* !MBEDTLS_AES_SETKEY_DEC_ALT && !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
+#endif /* !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
 
 #if defined(MBEDTLS_CIPHER_MODE_XTS)
 static int mbedtls_aes_xts_decode_keys(const unsigned char *key,