[Merge] ~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu:remove-deprecate-canary into ~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu:resolute

[Dan Bungert]

Review: Approve

Thanks for the cleanup
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https://code.launchpad.net/~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu/+merge/498018
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