Remove done TODO.

rtiow/src/texture/envmap.rs

@@ -21,7 +21,6 @@ impl EnvMap {
         let zero = Vec3::new(0., 0., 0.);
         let u = ray.x.atan2(ray.z) / f32::consts::PI /2.0 + 0.5;
         let v = ray.y / 2.0 + 0.5;
-        // TODO(wathiede): properly wrap sphere to lat/lon.
         self.img_tex.value(u, v, zero)
     }
 }