- Removed unused variable

diff --git a/tests/suites/test_suite_rsa.function b/tests/suites/test_suite_rsa.function
index 6b5c0ac..306cef1 100644
--- a/tests/suites/test_suite_rsa.function
+++ b/tests/suites/test_suite_rsa.function
@@ -297,7 +297,6 @@
     unsigned char output_str[1000];
     rsa_context ctx;
     int msg_len;
-    int res;
 
     rsa_init( &ctx, {padding_mode}, 0, &badrand, NULL );
     memset( message_str, 0x00, 1000 );