Remove css/css-anchor-position/anchor-inherited.html from anchor pos focus area

[emilio]

Test List

https://wpt.fyi/results/css/css-anchor-position/anchor-inherited.html

Rationale

The inherit`ance behavior depends on the style / layout interleaving shenanigans that we intentionally left out of interop.

(Sorry for the last minute issue, this one I had missed)

[dholbert]

I've got a PR to do the removal at web-platform-tests/wpt-metadata#8344 , ready to merge when we've got the requisite sign-offs here.