Remove dataflow (in packages and recipe)

Bug: 1040991
Change-Id: I246b1b9d7a15edf25dc145a68421eb7ced57575f
Reviewed-on: https://chromium-review.googlesource.com/c/infra/infra/+/2128354
Commit-Queue: Quinten Yearsley <qyearsley@chromium.org>
Reviewed-by: Andrii Shyshkalov <tandrii@google.com>
Cr-Original-Commit-Position: refs/heads/master@{#30378}
Cr-Mirrored-From: https://chromium.googlesource.com/infra/infra
Cr-Mirrored-Commit: dc7de4675108065b876d36eadc72721016879676
16 files changed
tree: 4b825dc642cb6eb9a060e54bf8d69288fbee4904

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