Remove pytest-codspeed install from personal fork

[kenodegard]

Description

With the pytest-codspeed 3.0.0 release (https://github.com/CodSpeedHQ/pytest-codspeed/releases/tag/v3.0.0) and conda-forge feedstock update (conda-forge/pytest-codspeed-feedstock#2) we can discontinue depending on a personal fork of pytest-codspeed.

Checklist - did you ...

• Add a file to the news directory (using the template) for the next release's release notes?
• Add / update necessary tests?
• Add / update outdated documentation?

[codspeed-hq]

CodSpeed Performance Report

Merging #5536 will not alter performance

_{Comparing kenodegard:install-conda-forge-pytest-codspeed-3.0.0 (eae517d) with main (4401820)}

🎉 Hooray! pytest-codspeed just leveled up to 3.0.0!

A heads-up, this is a breaking change and it might affect your current performance baseline a bit. But here's the exciting part - it's packed with new, cool features and promises improved result stability 🥳!
Curious about what's new? Visit our releases page to delve into all the awesome details about this new version.

Summary

✅ 5 untouched benchmarks