[Merged by Bors] - chore: cleanup of nolint simpNF

[kim-em]

---

[github-actions]

PR summary c45791f5a6

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

---

Declarations diff

+ if_mem_support
- sum_ite_self_eq_aux

You can run this locally as follows

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

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

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

---

Decrease in tech debt: (relative, absolute) = (6.28, 0.03)

Current number	Change	Type
5083	-13	porting notes
214	-6	disabled simpNF lints

Current commit c45791f5a6
Reference commit 7698f92f78

You can run this locally as

./scripts/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).

[adomani]

Should this be deprecated? I'll leave it to you to weigh in the fact that it was an aux lemma, but that it might have surfaces squeezing a simp!

Other than that

bors d+

[mathlib-bors]

✌️ kim-em can now approve this pull request. To approve and merge a pull request, simply reply with bors r+. More detailed instructions are available here.

[kim-em]

bors merge

[mathlib-bors]

Pull request successfully merged into master.

Build succeeded:

• Build
• Lint style