Remove deprecated jsonapi module functions

Looks good to me.

Looks like there are few more.

core/modules/jsonapi/src/Context/FieldResolver.php:      @trigger_error('Calling ' . __METHOD__ . '() without the $current_user argument is deprecated in drupal:9.3.0 and will be required in drupal:10.0.0.', E_USER_DEPRECATED);
core/modules/jsonapi/src/Access/RelationshipFieldAccess.php:    @trigger_error(sprintf("The %s access check is deprecated in drupal:9.2.0 and is removed from drupal:10.0.0. There is no replacement. JSON:API's route access checks are internal. See https://www.drupal.org/node/3194641.", static::ROUTE_REQUIREMENT_KEY), E_USER_DEPRECATED);
core/modules/jsonapi/src/Normalizer/LinkCollectionNormalizer.php:      @trigger_error('Calling ' . __METHOD__ . '() without the $current_user argument is deprecated in drupal:9.2.0 and will be required in drupal:10.0.0.', E_USER_DEPRECATED);

@andypost, I apologize.

I reviewed again taking more care and yes, this does remove all the deprecations for json api module, that is the following return no results.

grep -r "@deprecated" core | grep -v "node_modules" | grep -i json
grep -r "@group legacy" core | grep -v "node_modules" | grep -i json
grep -r "@trigger" core | grep -v "node_modules" | grep -i json

This looks ready to commit to me. I'll wait for another committer to confirm.

Nice one cleaning this up.

+1 RTBC

Looks good here too. I think quietone was planning to commit this one so leaving RTBC for that.

Committed to 10.0.x.

Thanks!