ssl_tls: remove RSA sig-algs in ssl_tls12_preset_suiteb_sig_algs

Signed-off-by: Yanray Wang <yanray.wang@arm.com>
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 08f5a5b..8302782 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -5153,17 +5153,12 @@
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDSA_CERT_REQ_ALLOWED_ENABLED)
     MBEDTLS_SSL_TLS12_SIG_AND_HASH_ALG(MBEDTLS_SSL_SIG_ECDSA, MBEDTLS_SSL_HASH_SHA256),
 #endif
-#if defined(MBEDTLS_RSA_C)
-    MBEDTLS_SSL_TLS12_SIG_AND_HASH_ALG(MBEDTLS_SSL_SIG_RSA, MBEDTLS_SSL_HASH_SHA256),
-#endif
 #endif /* MBEDTLS_MD_CAN_SHA256*/
+
 #if defined(MBEDTLS_MD_CAN_SHA384)
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDSA_CERT_REQ_ALLOWED_ENABLED)
     MBEDTLS_SSL_TLS12_SIG_AND_HASH_ALG(MBEDTLS_SSL_SIG_ECDSA, MBEDTLS_SSL_HASH_SHA384),
 #endif
-#if defined(MBEDTLS_RSA_C)
-    MBEDTLS_SSL_TLS12_SIG_AND_HASH_ALG(MBEDTLS_SSL_SIG_RSA, MBEDTLS_SSL_HASH_SHA384),
-#endif
 #endif /* MBEDTLS_MD_CAN_SHA256*/
     MBEDTLS_TLS_SIG_NONE
 };