Remove area type for traffic_calming=island

[ireun]

Hello!

This is yet another request to make Traffic Calming Islands great again! 😆

Thing is that traffic_calming=* is not meant to be used as areas, and so is not traffic_calming=island.

At least since Nov 2020 iD has been suggesting traffic_calming=island for areas under a misleading name 'Traffic island' (this has been fixed in #1074). Probably some of the mistakenly tagged islands were created because of that iD preset. For areas area:highway=traffic_island should be used instead.

There are currently 40k usages of that tag in combination with area=yes: https://taginfo.openstreetmap.org/tags/traffic_calming=island?filter=ways#combinations

I would also argue to restrict area usage for all traffic_calming=* - Though I'd like to think about that for a bit. :)

Wiki references:

• https://wiki.openstreetmap.org/wiki/Key:traffic_calming
• https://wiki.openstreetmap.org/wiki/Proposal:Traffic_Calming
• https://wiki.openstreetmap.org/wiki/Tag%3Atraffic_calming%3Disland
• https://wiki.openstreetmap.org/wiki/Proposal:Street_area#traffic_island

[github-actions]

🍱 You can preview the tagging presets of this pull request here.

[ireun]

Also I see that iD warns about usage of traffic_calming=island on ways. Not sure why though nor how to fix that.

[tyrasd]

Also I see that iD warns about usage of traffic_calming=island on ways. Not sure why though nor how to fix that.

This is caused by openstreetmap/iD@dc9b6a3 🙈 unfortunately

In order to avoid these false warnings, I'll have to fix that on iD side first, before we can merge this PR.