[Merged by Bors] - chore: fix double instance declaration in FiniteAdeleRing

[sgouezel]

FiniteAdeleRing has two DFunLike instance, defeq but not reducibly so, where the first one is not nice, and the second one is nice but with a proof using the first one. Instead, we give directly the nice instance with a direct proof.

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[github-actions]

PR summary cc26c21489

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

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Declarations diff

- instance : DFunLike (FiniteAdeleRing R K) (HeightOneSpectrum R) (fun v ↦ v.adicCompletion K)

You can run this locally as follows

## summary with just the declaration names:
./scripts/pr_summary/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/pr_summary/declarations_diff.sh long <optional_commit>

The doc-module for scripts/pr_summary/declarations_diff.sh contains some details about this script.

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No changes to technical debt.

You can run this locally as

./scripts/reporting/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

[kbuzzard]

Looks like this was my bad in #32277 -- thanks!

bors merge

[mathlib-bors]

Pull request successfully merged into master.

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