Docs: Drop JSDoc params the functions no longer take - #34226

Was reading VarIntent and the block above it documents a name parameter, but the arrow function only takes node. The one directly above it, Const, takes both, so the block looks like it got copied down and never trimmed. Went through the rest of src after that and three more turned up the same way. Switch carries a method param from Else sitting above it, setupDiffuseColor documents geometry when it actually destructures that out of the builder it is given, and the BindGroup constructor still documents an index it does not take.

Left alone the TSL factories, where the block sits over something like nodeProxyIntent( MathNode, MathNode.ALL ) and the documented names belong to the function being produced rather than to the call written underneath, and also the places where a parameter is commented out in the signature, getPropertyName( node/*, shaderStage*/ ) and friends, since that reads as deliberate rather than stale.