Removes mode param from mbedtls_rsa_pkcs1_sign

Commit removes the mode parameter from
mbedtls_rsa_pkcs1_sign and progagates the
change to all relevant parts of the codebase.

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
diff --git a/tests/suites/test_suite_x509write.function b/tests/suites/test_suite_x509write.function
index a36fa43..44f846f 100644
--- a/tests/suites/test_suite_x509write.function
+++ b/tests/suites/test_suite_x509write.function
@@ -19,8 +19,8 @@
                    mbedtls_md_type_t md_alg, unsigned int hashlen,
                    const unsigned char *hash, unsigned char *sig )
 {
-    return( mbedtls_rsa_pkcs1_sign( (mbedtls_rsa_context *) ctx, f_rng, p_rng, MBEDTLS_RSA_PRIVATE,
-                            md_alg, hashlen, hash, sig ) );
+    return( mbedtls_rsa_pkcs1_sign( (mbedtls_rsa_context *) ctx, f_rng, p_rng,
+                                    md_alg, hashlen, hash, sig ) );
 }
 size_t mbedtls_rsa_key_len_func( void *ctx )
 {