Don't redefine calloc and free
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index bcccd1d..61b88d1 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -38,8 +38,6 @@
 #define mbedtls_calloc     calloc
 #define mbedtls_free       free
 #define mbedtls_exit            exit
-#define mbedtls_calloc      calloc
-#define mbedtls_free        free
 #define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
 #define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
 #endif