removed old shader_kernel

src/main.rs

@@ -28,11 +28,9 @@ use crate::util::load_raw;
 use crate::canvas_frame::CanvasFrame;
 
 mod util;
-mod slider;
 mod timer;
 mod input;
 mod vkprocessor;
-mod button;
 mod vertex_2d;
 mod vertex_3d;
 mod sprite;