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bt: Remove unused code #1189

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@cjpatton cjpatton commented Jan 7, 2025

Stacked on #1187.
Partially addresses #947.

This module was written for the Mastic VDAF. Mastic uses a binary tree in two ways: (1) path building from candidate prefixes; and (2) a breadth-first traversal for computing the evaluation proof. None of the functionalities implemented in the bt module support these operations efficiently. Instead, Mastic implements these operations directly.

Remove the unused code from the bt module, leaving only the data types used by Mastic/VIDPF. It may be useful to keep these in their own module, as the data types may eventually be useful for Poplar1/IDPF.

@cjpatton cjpatton marked this pull request as ready for review January 7, 2025 22:54
@cjpatton cjpatton requested a review from a team as a code owner January 7, 2025 22:54
This module was written for the Mastic VDAF. Mastic uses a binary tree
in two ways: (1) path building from candidate prefixes; and (2) a
breadth-first traversal for computing the evaluation proof. None of the
functionalities implemented in the `bt` module support these operations
efficiently. Instead, Mastic implements these operations directly.

Remove the unused code from the `bt` module, leaving only the data types
used by Mastic/VIDPF. It may be useful to keep these in their own
module, as the data types may eventually be useful for Poplar1/IDPF.
@cjpatton cjpatton changed the base branch from main to cjpatton/947-8-cleanup January 9, 2025 15:58
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