remove: delete Main Pass Excluded example entry from README.md

Author: rlneumiller

examples/README.md

@@ -167,7 +167,6 @@ Example | Description
 [Lighting](../examples/3d/lighting.rs) | Illustrates various lighting options in a simple scene
 [Lightmaps](../examples/3d/lightmaps.rs) | Rendering a scene with baked lightmaps
 [Lines](../examples/3d/lines.rs) | Create a custom material to draw 3d lines
-[Main Pass Excluded](../examples/3d/main_pass_excluded.rs) | Excludes an entity from main camera passes while still casting shadows
 [Mesh Ray Cast](../examples/3d/mesh_ray_cast.rs) | Demonstrates ray casting with the `MeshRayCast` system parameter
 [Meshlet](../examples/3d/meshlet.rs) | Meshlet rendering for dense high-poly scenes (experimental)
 [Mirror](../examples/3d/mirror.rs) | Demonstrates how to create a mirror with a second camera