tidy: clean unneeded files

config/config.rviz

generated_materials/camera_path_depth.json

generated_materials/camera_path_rgb.json

nerf_sim/nerf_render.py

nerf_sim/pcd_publisher_node.py

nerf_sim/render_lidar.py

nerf_sim/sim_depth_generator.py

nerf_sim/sim_rgb_generator.py

nerf_sim/simple_image_generator.py

nerf_sim/simple_image_listener.py

setup.py

test_materials/00000.jpg

test_materials/left_fisheye.json

test_materials/point_cloud.ply