[Merge] ~paride/ubuntu-seeds/+git/ubuntu:drop-at into ~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu:hirsute

[Christian Ehrhardt ]

Review: Approve

For now this is the right little change on a longer path to at-independence :-)
Thank you
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https://code.launchpad.net/~paride/ubuntu-seeds/+git/ubuntu/+merge/393922
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