Delete unused variable p in main()

Author: hollasch

books/RayTracingInOneWeekend.html

@@ -913,7 +913,6 @@
 
 
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C++ highlight
-                vec3 p = r.at(2.0);
                 vec3 color = ray_color(r, world);
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C++
 

src/TheNextWeek/main.cc

@@ -338,7 +338,6 @@ int main() {
                 auto u = (i + random_double()) / nx;
                 auto v = (j + random_double()) / ny;
                 ray r = cam.get_ray(u, v);
-                vec3 p = r.at(2.0);
                 color += ray_color(r, world, max_depth);
             }
             color.write_color(std::cout, num_samples);

src/TheRestOfYourLife/main.cc

@@ -101,7 +101,6 @@ int main() {
                 auto u = (i + random_double()) / nx;
                 auto v = (j + random_double()) / ny;
                 ray r = cam->get_ray(u, v);
-                vec3 p = r.at(2.0);
                 color += ray_color(r, world, &hlist, max_depth);
             }
             color.write_color(std::cout, num_samples);