Cleanup clearcoat example (#15594)

The components needed for `DirectionalLight` are added automatically
since #15554
`create_point_light` already existed and returns a `PointLight` with
these same settings

examples/3d/clearcoat.rs

@@ -23,9 +23,8 @@ use bevy::{
  color::palettes::css::{BLUE, GOLD, WHITE},
  core_pipeline::{tonemapping::Tonemapping::AcesFitted, Skybox},
  math::vec3,
- pbr::{CascadeShadowConfig, Cascades, CascadesVisibleEntities},
  prelude::*,
- render::{primitives::CascadesFrusta, texture::ImageLoaderSettings},
+ render::texture::ImageLoaderSettings,
 };
 
 /// The size of each sphere.
@@ -184,19 +183,7 @@ fn spawn_scratched_gold_ball(
 
 /// Spawns a light.
 fn spawn_light(commands: &mut Commands) {
- commands.spawn((
- PointLight {
- color: WHITE.into(),
- intensity: 100000.0,
- ..default()
- },
- // Add the cascades objects used by the `DirectionalLight`, since the
- // user can toggle between a point light and a directional light.
- CascadesFrusta::default(),
- Cascades::default(),
- CascadeShadowConfig::default(),
- CascadesVisibleEntities::default(),
- ));
+ commands.spawn(create_point_light());
 }
 
 /// Spawns a camera with associated skybox and environment map.