chore: remove pre-commit hook

[ehmicky]

We currently enforce the following Git hooks:

• commitlint on new commit messages
• Linting/Prettier on git push

#403 added a new Git hook: npm test on new commits.

While this is good for code quality, I believe this might not work since some of our repositories have some pretty big test suites. Running those on each commit, as opposed to each git push might slow us down.

This PR reverts this new Git hook. Please let me know what you think!

cc @XhmikosR

Checklist

Please add a x inside each checkbox:

• I have read the contribution guidelines.
• The status checks are successful (continuous integration). Those can be seen below.