Organization page: Remove Offices in field

The field has been disabled for awhile. We should audit the codebase to remove all references to taxonomy_vocabulary_52, including deleting the field, ahead of upgrading Drupal.org past Drupal 7. 🐛 Organization page: Remove Offices in field Active has an example of this replacement for the community case studies filter.

From slack: https://drupal.slack.com/archives/C5ABFBZ5Z/p1679860381481319

@dasjo:
i have filtered for switzerland: https://www.drupal.org/case-studies/community?country%5B%5D=24422 →
it seems like most displayed case studies aren't related to switzerland
it might be that it filters by organizations serving a location, if so it might be more appropriate to only filter by organizations having an office in a certain location
e.g. https://www.drupal.org/case-study/schwaketenbad-website-relaunch → is a case study by 1xinternet that has offices in germany, spain and iceland.
the issue where it was requested and implemented can be found here https://www.drupal.org/project/drupalorg/issues/3207977 →

reply @fjgarlin:
the feature has Locations served: https://git.drupalcode.org/project/drupalorg/-/blob/7.x-3.x/features/dru..., which actually explains why these results are showing up.
the change happened in this commit https://git.drupalcode.org/project/drupalorg/-/commit/36d4ce02e6a145c0ea... and seems to be a part of a larger issue where that old field is being deprecated: 🐛 Organization page: Remove Offices in field Active

so maybe it’s using the wrong field.
* Before: taxonomy_vocabulary_52
* Current: field_organization_loc_served
* Expected: field_office_location???

The new address field on organizations, “Office locations” (field_office_locations) does have a country-of-address filter, so that is an option for case studies, and anything else that needs replacing.

Note that the data on my copy is old so new case studies might not show, but I've done the changes on the field for that view. I've changed from "Locations served" to "Office locations".

You can see the page here: https://fjgarlin-drupal.dev.devdrupal.org/case-studies/community?country...

And the MR with the changes here: https://git.drupalcode.org/project/drupalorg/-/merge_requests/159/diffs

Looks good, going ahead and deploying this shortly. Resetting to active since there is more work to do in this issue.