When used with the `--port` option, lot of noisy output is generated

I am using rustscan to search specific port in subnet with this command:

```
rustscan -a 192.168.178.0/24 -p 443,80
```

result are correct, but I get a LOT of such messages:

```
Looks like I didn't find any open ports for {:?}. This is usually caused by a high batch size
```

I know I can use `--greppable` to make it disappear, but it would be nice to have a better default behavior in this case.