Remove SignedField abstraction #11677
Description
Problem
impl Ord for SIgnedField produces different results than impl Ord for FieldElement for certain cases with negative fields.
Happy Case
There have been enough discrepancies between SignedField and FieldElement in the past that we should consider removing SignedFields altogether.
Workaround
None
Workaround Description
No response
Additional Context
No response
Project Impact
None
Blocker Context
No response
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Support Needs
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