revert dbg config

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 9434a60..ffb9438 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -751,7 +751,6 @@
     mbedtls_entropy_context entropy;
     mbedtls_mock_socket socket;
     mbedtls_endpoint_certificate cert;
-    FILE *dbg_output;
 } mbedtls_endpoint;
 
 /*
@@ -873,17 +872,6 @@
     return ret;
 }
 
-static void my_debug( void *ctx, int level,
-                      const char *file, int line,
-                      const char *str )
-{
-    ((void) level);
-    mbedtls_endpoint *ep=(mbedtls_endpoint *)ctx;
-    mbedtls_fprintf( ep->dbg_output,
-                     "%s: %s:%04d: %s",
-                     ep->name, file, line, str );
-    fflush( ep->dbg_output  );
-}
 /*
  * Initializes \p ep structure. It is important to call `mbedtls_endpoint_free()`
  * after calling this function even if it fails.
@@ -996,9 +984,6 @@
     mbedtls_ssl_conf_set_user_data_p( &ep->conf, ep );
     TEST_EQUAL( mbedtls_ssl_get_user_data_n( &ep->ssl ), user_data_n );
     mbedtls_ssl_set_user_data_p( &ep->ssl, ep );
-    ep->dbg_output = stderr;
-    mbedtls_ssl_conf_dbg( &ep->conf, my_debug, ep );
-    mbedtls_debug_set_threshold( 100 );
 
 exit:
     return ret;