Remove described class cop
Remove described class cop

We've agreed `User.new` is easier to read than `described_class.new` and
since we are ignoring Hound's comments regarding this topic, we might as
well remove it.

AyuntamientoMadrid/consul,AyuntamientoMadrid/consul,AyuntamientoMadrid/consul,AyuntamientoMadrid/consul