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by omaranto 3542 days ago
You could use C-S-<backspace> C-y C-y, which uses kill-whole-line (C-S-<backspace>) instead of kill-line twice (C-k C-k).

I think that's reasonably short (same number of non-modifier keys as vi!). Of course, if you find yourself doing it a lot, you can configure Emacs however you want.