Remove unused pycountry dependency.

[rtibbles]

Summary

Description of the change(s) you made

• We were adding pycountry to our locale paths
• A quick grep of the code base showed no usage of _(...) gettext that would require strings that don't already exist in Django or are our own internal strings.

Manual verification steps performed

Check that the server still runs fine.
Check that all language names are properly translated in the frontend language changing interfaces.

[bjester]

I don't really understand the significance of adding pycountry to the locales, but regarding

A quick grep of the code base showed no usage of _(...) gettext that would require strings that don't already exist in Django or are our own internal strings.

What about template translations? They use gettext internally

[rtibbles]

Can double check!

[rtibbles]

I don't really understand the significance of adding pycountry to the locales

As far as I can tell from the pycountry repo, the locale files contain internationalized names for countries and languages. We use Django's internal naming registry for language names to do this for interface languages, and le-utils names for content languages, so I am sure we're not leveraging it for displaying language names anywhere.

[rtibbles]

What about template translations?

Have double checked all the template translations too, none there that are not regular interface text (no country or language names).

[bjester]

LGTM