Makefile: Added AOE_CFG_OBJ to the clean target.

Makefile

@@ -63,7 +63,7 @@ install : all
 	done
 
 clean :
-	rm -f ${CONF_SCRIPTS} ${AOE_PING_OBJ} ${PROGS}
+	rm -f ${CONF_SCRIPTS} ${AOE_PING_OBJ} ${AOE_CFG_OBJ} ${PROGS}
 
 aoeping : ${AOE_PING_OBJ}
 	${CC} ${CFLAGS} -o $@ ${AOE_PING_OBJ}