[US_ID][Pre-launch] Fix broken Sentencing and Probation "Judicial District" dropdowns (or remove them)

[lilidworkin]

Describe the bug
All Judicial District dropdowns on the Sentencing and Probation narratives don't work. This is because they both reference the judicialDistricts variable, which is empty.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://spotlight-staging.recidiviz.org/us-id/narratives/sentencing/1 or https://spotlight-staging.recidiviz.org/us-id/narratives/probation/1
2. Click on any Judicial District dropdown

Expected behavior
You can select different Judicial Districts.

Additional context
I think this is because our metric files for Sentencing and Probation don't contain complete district information. You can see the metric files in GCS here. For instance, sentence_type_by_district_by_demographics.json only has values of ALL or EXTERNAL_UNKNOWN for the district field. Once we update the pipelines that generate these files, we can update us_id.ts accordingly.

If it's difficult to add this data, we should just remove this dropdown.

[jkgerig]

Not high priority for ID leadership, we should just remove this option.