RSA PKCS#1 v1.5 no longer depends on MD

This has been the case since
https://github.com/Mbed-TLS/mbedtls/pull/6065 which forgot to update the
documentation, and also is_builtin_calling_md(), so update those.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index 61007d8..9cb0f9a 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -1130,7 +1130,7 @@
  *
  * Enable support for PKCS#1 v1.5 encoding.
  *
- * Requires: MBEDTLS_MD_C, MBEDTLS_RSA_C
+ * Requires: MBEDTLS_RSA_C
  *
  * This enables support for PKCS#1 v1.5 operations.
  */
diff --git a/tests/suites/test_suite_psa_crypto_storage_format.function b/tests/suites/test_suite_psa_crypto_storage_format.function
index c52dae1..31d3cb4 100644
--- a/tests/suites/test_suite_psa_crypto_storage_format.function
+++ b/tests/suites/test_suite_psa_crypto_storage_format.function
@@ -84,10 +84,6 @@
  * also be built-in. */
 static int is_builtin_calling_md( psa_algorithm_t alg )
 {
-#if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN)
-    if( PSA_ALG_IS_RSA_PKCS1V15_SIGN( alg ) )
-        return( 1 );
-#endif
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS)
     if( PSA_ALG_IS_RSA_PSS( alg ) )
         return( 1 );