FIX: Remove date from bookmark reminder non-English translations (PR #9354)

The {{date}} interpolated value was removed from the English translations here but not from the other translations, causing breakages:

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Also adds a , inbetween date and time for reminders using long_no_year for readability.

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GitHub

This pull request has been mentioned on Discourse Meta. There might be relevant details there:

https://meta.discourse.org/t/improved-bookmarks-with-reminders/144542/70