[Restructure/plasma] estimator cleanup

[wkerzendorf]

:pencil: Description

Type: :beetle: bugfix | :rocket: feature | :biohazard: breaking change | :vertical_traffic_light: testing | :memo: documentation | :roller_coaster: infrastructure

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:vertical_traffic_light: Testing

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:ballot_box_with_check: Checklist

• [ ] I requested two reviewers for this pull request
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