Revert "Added"

This reverts commit 40c04c875f.

src/ray.rs

@@ -1,15 +0,0 @@
-use nalgebra::Vector4;
-
-#[derive(Copy, Clone)]
-pub struct Ray {
-    a: Vector4<f32>,
-    b: Vector4<f32>,
-}
-impl Ray {
-    fn new(_a: Vector4<f32>, _b: Vector4<f32>) -> Ray {
-        Ray { a: _a, b: _b }
-    }
-    fn point_at_paremeter(&self, t: f32) -> Vector4<f32> {
-        self.a + t * self.b
-    }
-}

src/shader.wsgl

@@ -1,11 +0,0 @@
-@vertex
-fn vs_main(@builtin(vertex_index) in_vertex_index: u32) -> @builtin(position) vec4<f32> {
-    let x = f32(i32(in_vertex_index) - 1);
-    let y = f32(i32(in_vertex_index & 1u) * 2 - 1);
-    return vec4<f32>(x, y, 0.0, 1.0);
-}
-
-@fragment
-fn fs_main() -> @location(0) vec4<f32> {
-    return vec4<f32>(1.0, 0.0, 0.0, 1.0);
-}