remove conditional that never runs

[atlv24]

Objective

• this code doesn't run as far as i can tell, and doesn't seem to serve any purpose. custom render phases can't add themselves to this list, so if render phases must be here for some reason this is broken anyways for 3rd party users.

Solution

• yeet and regression test for confidence

Testing

• i ran bistro and a few other examples, gonna ask pixel smeagol now

[atlv24]

pixel smeagle says its fine