actually remove particles

src/main.rs

@@ -1,6 +1,5 @@
 mod drawable;
 mod engine;
-mod particle;
 
 use drawable::DrawShape;
 use engine::{PhysicsEngine, PhysicsState};
@@ -15,7 +14,6 @@ use rapier2d::{
 const WINDOW_WIDTH: u32 = 512;
 const WINDOW_HEIGHT: u32 = WINDOW_WIDTH;
 const PARTICLE_COUNT: u32 = 200;
-const PARTICLE_SIZE: f32 = 10.0;
 
 struct Model {
     // Store the window ID so we can refer to this specific window later if needed.