Consider removing `paths.relative: undefined`

[benmccann]

Describe the problem

#11059 (comment)

Describe the proposed solution

Talk to Rich and figure out if we really need this or what exactly it does

Alternatives considered

No response

Importance

nice to have

Additional Information

No response

[Rich-Harris]

The context here is that we wanted paths.relative to be a boolean (that starting in 2.0 would default to true) but it would have been a breaking change: #9220 (comment)

We should indeed remove it in 2.0

[benmccann]

A note as to relative paths on the web archive