chore: remove shortcut instance that is no longer needed

[jcommelin]

---

[jcommelin]

!bench

[leanprover-radar]

Benchmark results for 70ff133 against 896cc56 are in. No significant results found. @jcommelin

• ✅ build//instructions: -16.7G (-0.01%)

Small changes (1🟥)

• 🟥 build/module/Mathlib.Tactic.MinImports//instructions: +132.8M (+2.64%)

[github-actions]

PR summary 896cc56a39

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

---

Declarations diff

- instance {p : ℝ≥0∞} [Fact (1 ≤ p)] :

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.

---

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).