Removes mode param from mbedtls_rsa_pkcs1_encrypt

Removal of the mode parameter from
mbedtls_rsa_pkcs1_encrypt function. This change
is propagated throughout the codebase and to
relevant tests.

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
diff --git a/tests/suites/test_suite_pkcs1_v21.function b/tests/suites/test_suite_pkcs1_v21.function
index 2e7f339..623f7bc 100644
--- a/tests/suites/test_suite_pkcs1_v21.function
+++ b/tests/suites/test_suite_pkcs1_v21.function
@@ -35,8 +35,8 @@
         message_str->x = NULL;
     TEST_ASSERT( mbedtls_rsa_pkcs1_encrypt( &ctx,
                                             &mbedtls_test_rnd_buffer_rand,
-                                            &info, MBEDTLS_RSA_PUBLIC,
-                                            message_str->len, message_str->x,
+                                            &info, message_str->len,
+                                            message_str->x,
                                             output ) == result );
     if( result == 0 )
     {