Remove PHPStan from pre-commit hook

[lonnieezell]

This removes PHPstan from our precommit hook. While that was well intentioned, I believe from discussions we've had that most of the team actually finds that more trouble than it is worth. I believe it causes a choke point for potential contributors who get stuck trying to pass that and never actually submit anywhere. With it gone, they can submit and open up a discussions about the code much easier.

At one point discussions mentioned removing the entire pre-commit hook, but I find value in the linting and auto-fixing of style issues where it can, and believe that stan was the biggest pain point in the process.

[kenjis]

If we accept this, why don't we go with develop?

[michalsn]

TBH, it became my ritual after cloning the repo to remove the pre-commit hook. Although I am still able to run all commands separately, the hook never worked for me.

[lonnieezell]

Rebased onto develop branch.