Remove highway=ford deprecation

[quincylvania]

highway=ford does not currently appear in OSM. It was marked as fully deprecated on its wiki page in 2021.

It seems that highway=ford went out of fashion since people were using it on ways and it conflicted with the primary highway tag value. However, I don't think there's really any reason for ford to be a top-level tag. I'd like to experiment with using the tag on nodes in a similar manner to highway=crossing, and if this seems useful, then make a tagging proposal. I'd appreciate if the iD validator didn't flag an error during these experiments lol.

[github-actions]

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[tordans]

It looks like it is gone from the DB since end of 2020 and does not reappear – https://taghistory.raifer.tech/?#***/highway/ford

Given this, I don't see a reason to keep the deprecation rule so this LGTM.

[tordans]

However, I don't think there's really any reason for ford to be a top-level tag. I'd like to experiment with using the tag on nodes in a similar manner to highway=crossing, and if this seems useful, then make a tagging proposal.

Sounds reasonable and like a good idea to me.

[quincylvania]

@tordans Thanks!