Remove description implementation for std::error::Error

[christophermaier]

The description function for the std::error::Error trait has been "soft-deprecated".

Historically, this implementation has always been a bit "noisy" in our codebase, since it largely duplicates the Display trait implementation for our error types.

The docs say that we no longer need to implement description, and should favor implementing Display on new types. Since we already do the latter, we should now to the former and remove all description implementations in all the crates of this repository.

[menoude]

Hi,
I'm looking for a first contribution to a project, do you only need to remove the method implementation everywhere or is there a need for some replacement? If it's the former, I can try to handle that :)

[christophermaier]

@menoude Yes, this is just about removing the current method implementations; we don't need anything to replace them.

(Rather, it should be just about removing the current code... I don't think we're explicitly using the description method ourselves, and have only implemented it to conform to the then-current definition of the Error trait. If you get into it and find otherwise, let's chat 😅 )

Thanks for your interest in Habitat; we're very glad to have you around!