Update test suite to properly allocation & deallocation

tests/test-mfuncobj.c

@@ -20,7 +20,6 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-#include <stdio.h>
 #include "test-obj.h"
 #include "m-string.h"
 #include "m-funcobj.h"