Remove dependency on xerrors

[Quinn Rivenwell]

[Quinn Rivenwell]

This means we would lose stack frames for now, which is fine I think given most of our error wraps are easily identifiable via text.

Thoughts @ammario @scsmithr @nathanpotter @coadler

[Colin Adler]

I disagree. I find the stack frames extremely helpful, especially in slog.Human.

What do we gain from removing xerrors?

[Sean Smith]

I agree with Colin.

[Quinn Rivenwell]

Sounds good.

Less external dependencies, it's nice to be able to only depend on the stdlib.

[Colin Adler]

Really unfortunate it was merged into the stdlib without traces :/

[Quinn Rivenwell]

Agreed