[openstreetmap-website] Don't raise APIAlreadyDeletedError when deleting with if-unused (#858)

[Bryan Housel]

related: openstreetmap/iD#2475

The object is obviously unused if it's already been deleted.. No need to reject a user's changeset for this error.
You can merge this Pull Request by running:

  git pull https://github.com/bhousel/openstreetmap-website master

Or you can view, comment on it, or merge it online at:

  https://github.com/openstreetmap/openstreetmap-website/pull/858

-- Commit Summary --

  * Don't raise APIAlreadyDeletedError when deleting with if-unused

-- File Changes --

    M lib/diff_reader.rb (2)

-- Patch Links --

https://github.com/openstreetmap/openstreetmap-website/pull/858.patch
https://github.com/openstreetmap/openstreetmap-website/pull/858.diff

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Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/openstreetmap-website/pull/858
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