[tz] Dropping coordinates from zone1970.tab?

[Clive D.W. Feather]

Aurelien Jarno via tz said:
> The point is not about choosing a timezone from a location, but rather
> being able to show the cities linked to the timezones on a map so that
> end users can pickup their timezone visually.

If you're doing that, you should be showing the area on the map, not a
circle around the most-populous city.

> The other alternative for end users to select a timezone, is to present
> them with all timezones matching their country (using ISO 3166).

A third option is to ask them "what time is it right now?" and then list
(or show on a map) all the zones that have the same offset.

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Clive D.W. Feather          | If you lie to the compiler,
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