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_pkcs1_v15.function b/tests/suites/test_suite_pkcs1_v15.function
index 068027b..273c604 100644
--- a/tests/suites/test_suite_pkcs1_v15.function
+++ b/tests/suites/test_suite_pkcs1_v15.function
@@ -116,8 +116,7 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
-void pkcs1_v15_decode( int mode,
-                       data_t *input,
+void pkcs1_v15_decode( data_t *input,
                        int expected_plaintext_length_arg,
                        int output_size_arg,
                        int expected_result )
@@ -207,17 +206,12 @@
     TEST_ASSERT( input->len <= sizeof( N ) );
     memcpy( original, input->x, input->len );
     memset( original + input->len, 'd', sizeof( original ) - input->len );
-    if( mode == MBEDTLS_RSA_PRIVATE )
-        TEST_ASSERT( mbedtls_rsa_public( &ctx, original, intermediate ) == 0 );
-    else
-        TEST_ASSERT( mbedtls_rsa_private( &ctx, &mbedtls_test_rnd_pseudo_rand,
-                                          &rnd_info, original,
-                                          intermediate ) == 0 );
+    TEST_ASSERT( mbedtls_rsa_public( &ctx, original, intermediate ) == 0 );
 
     memcpy( final, default_content, sizeof( final ) );
     TEST_ASSERT( mbedtls_rsa_pkcs1_decrypt( &ctx,
                                             &mbedtls_test_rnd_pseudo_rand,
-                                            &rnd_info, mode, &output_length,
+                                            &rnd_info, MBEDTLS_RSA_PRIVATE, &output_length,
                                             intermediate, final,
                                             output_size ) == expected_result );
     if( expected_result == 0 )