Remove noise from the gem

I am getting pretty tired of watching this:

```
[billetto (kg/getting_rid_of_deprecation_warnings)]=> rails s
in the lib patrol
loading task
=> Booting Thin
=> Rails 3.2.13 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
>> Thin web server (v1.5.1 codename Straight Razor)
>> Maximum connections set to 1024
>> Listening on 0.0.0.0:3000, CTRL+C to stop
```

So I removed it.