Remove config file size limit

[LionelCS]

No description provided.

[ggodik]

@LionelCS If you're going to remove the limit you can remove the ReadFromFile function all together and use a yaml.Decoder to read the file directly without the intermediate byte slice.

f, err := os.Open(file)
... check errors and declare confs ...
yaml.NewDecoder(f).Decode(conf)