[Specs] Remove blocks used to configure objects backed by the DSL about core

[alloy]

Why?

(Specs are often handy as they show how an API should be used. I.e. BDD.)

[fabiopelosin]

Mostly styling (the other way is less verbose and more consisted with the language as it avoid nesting blocks). Still I think that this ticket makes more sense for non DSL files where the DSL was used for laziness (creation of subspecs).

[alloy]

Still I think that this ticket makes more sense for non DSL files where the DSL was used for laziness (creation of sub specs).

Ah yes, I see your point now. 👍

[fabiopelosin]

I've changed my mind: those specs are doing their job finely and should be changed only when other work is done on them. Also I checked them again and didn't find strong examples of verbosity.