Vasiliy Tereshkov

Remove unsupported `shader.um`

2

``` vtereshkov@Vasiliy-Acer:~/tophat$ ./tophat -main tests/allt.um error: /home/vtereshkov/tophat/shader.um (115, 1): Unresolved prototype of umth_shader_set_uniform_vf2 ```

Tophat crashes on drawing an image stored in a local variable

2

Code example: ``` import ( "std.um" "th.um" "window.um" "image.um" ) fn test() { img, err := image::mk({0, 0, 0, 0}, {2, 2}) std::exitif(err) std::assert(img.validate()) img.draw(th::mkTransform({0, 0})) } fn init*() {...