[Tagging] drop covered=booth?

[Warin]

On 24/06/18 03:07, Bryan Housel wrote:

>> Somebody has already posted a picture to the list of a public phone with no hood, no booth, and no cover, so
>> adding booth=yes to all phones could be an error.
> Are you being deliberately obtuse?
>
> We’re not adding `booth=yes` to all phones.  Just the ones that
> - don’t already have a `booth=*` tag and

That is not right. If they don't have a booth=* tag then don't think that these all have a booth.

So I would not add a tag here that maybe wrong.

> - do have a `covered=booth` tag

This is correct .. they have a booth so adding booth=yes is correct.