chore(Algebra/Lie/Submodule): remove duplicate instance

[JovanGerb]

This PR removes the explicit CoeSort instance on LieSubmodule, because it is identical to the one inherited from its SetLike instance.

This instance was added in #16509, and I'm not quite sure why it was needed then and not anymore.

---

[github-actions]

PR summary 0e6b5bebd4

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

---

Declarations diff

- instance (priority := high) coeSort : CoeSort (LieSubmodule R L M) (Type w)

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).