Update WebGLRenderer.d.ts

[Mugen87]

Why

maxMorphTargets and maxMorphNormals have been removed from the public interface of WebGLRenderer, see mrdoob/three.js#21522.

What

Removes maxMorphTargets and maxMorphNormals from WebGLRenderer.d.ts.

Checklist

• Added myself to contributors table
• Ready to be merged

[joshuaellis]

When doing the .d.ts files originally, was there a reason you excluded private methods instead of appending them with private? Just for my own reference.

[Mugen87]

I did not added this code originally so I'm afraid I can answer your question^^.

But during the time the d.ts files resided in the three.js repo, private methods or properties were never added to the type declaration files.