Revert "[FIX] Allow shadow catcher to handle model deletion (#98)" (#109)

This reverts commit 0912f21.

Author: willeastcott

examples/assets/scripts/shadow-catcher.mjs

@@ -98,8 +98,8 @@ export class ShadowCatcher extends Script {
             camera.layers = camera.layers.concat([this.layer.id]);
         });
 
-        this.entity.findComponents('render').forEach((render) => {
-            render.layers = render.layers.concat([this.layer.id]);
+        this.entity.findComponents('render').forEach((component) => {
+            this.layer.shadowCasters = this.layer.shadowCasters.concat(component.meshInstances);
         });
     }
 }