Remove belongs to module annotations

[l-emele]

Summary of the discussion

Discussed bilaterally with @stap-m : We don't need anymore the annotation property belongs to module. With this PR all uses in the OEO are removed and the property itself will be marked as deprecated.

Type of change (CHANGELOG.md)

Updated

• Mark belongs to module via editor note as deprecated

Removed

• All uses of belongs to module

Workflow checklist

Automation

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• [ ] 📝 Update the CHANGELOG.md
• [ ] 📙 Add #'s to term tracker item

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• [ ] 🐙 Provided feedback and show sufficient appreciation for the work done