[Tagging] Deprecate healthcare=pharmacy and healthcare=hospital

[Joseph Eisenberg]

I looked up the history again, and it's clear that the healthcare tags
which duplicated common amenity tags were never popular until they
were added to the iD presets in 2017:

https://taghistory.raifer.tech - compare "healthcare=pharmacy" and
"amenity=pharmacy" - the Healthcare proposal was approved in November
2010 but usage is not visible till 2017

Request to add more healthcare presets:
https://github.com/openstreetmap/iD/issues/3589
PR which added them, duplicating the amenity=pharmacy tag with
healthcare=pharmacy: https://github.com/openstreetmap/iD/pull/4329

Note comments against deprecating amenity=* tags in this issue and PR:
"I don't agree with deprecating tags like amenity=hospital or
amenity=doctors, which are in widespread use. But we could probably
add the new healthcare tags alongside the old ones."
"Yes, I was just talking about addig this one, not deleting the others."
https://github.com/openstreetmap/iD/issues/3589#issuecomment-260979736

There was no intention to replace amenity=*, and mostly the PR added new tags.

Almost all of the usage has come since this change, but note that
amenity=pharmacy is still significantly more common than all uses of
the healthcare=* key, and it is increasing in spite of the iD editor
making an odd choice of validation rules.

- Joseph Eisenberg

On 1/29/20, Paul Allen <pla16021 at gmail.com> wrote:
> On Wed, 29 Jan 2020 at 12:51, Lionel Giard <lionel.giard at gmail.com> wrote:
>
> Is there something that i am missing here ? ^_^
>>
>
> Rendering.  Dual-tagging by iD is to get the new tags in place whilst
> retaining the old tags until standard carto (at least) decides to render
> the
> new tags.  Given iD's relationship with Mapbox, I'm pretty sure that
> Mapbox carto will eventually render the new tags (if it doesn't already).
>
> --
> Paul
>