Preparatory commit to remove tests

Removed a conditional compilation block
relating to MBEDTLS_PKCS1_V15 in
rsa_pkcs1_verify_raw function that was no
longer relevant.

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 59ea17b..234ef45 100644
--- a/tests/suites/test_suite_x509write.function
+++ b/tests/suites/test_suite_x509write.function
@@ -7,11 +7,12 @@
 #include "mbedtls/rsa.h"
 
 #if defined(MBEDTLS_RSA_C)
-int mbedtls_rsa_decrypt_func( void *ctx, int mode, size_t *olen,
+int mbedtls_rsa_decrypt_func( void *ctx, size_t *olen,
                        const unsigned char *input, unsigned char *output,
                        size_t output_max_len )
 {
-    return( mbedtls_rsa_pkcs1_decrypt( (mbedtls_rsa_context *) ctx, NULL, NULL, mode, olen,
+    return( mbedtls_rsa_pkcs1_decrypt( (mbedtls_rsa_context *) ctx, NULL, NULL,
+                               MBEDTLS_RSA_PRIVATE, olen,
                                input, output, output_max_len ) );
 }
 int mbedtls_rsa_sign_func( void *ctx,