Comment 9 for bug 203286

We have to allow es_ES and similar locales sometimes so per-locale modifications can be made. Eg. gweather read the default location from a translation, so GNOME's weather-locations used to provide es_ES, es_MX, es_AR and similar with just the default weather location changed (not the best way to do it, but that's reality).

Still, it is marked as a hidden language in Launchpad, so it would not be shown in the list of languages unless somebody uploaded a PO file with that name or hacked URL to get to the relevant page. Basically, we can try removing the file from the database, but you'd (Ubuntu translators, and mdke for ubuntu-docs) also need to make sure it's not being updated any more. Maybe assign Ubuntu Spanish Translators with the job of maintaining es_ES as well (so not everybody can mess with it)?