Removes raw_window_handle, uses Cstr literals

[SuchAFuriousDeath]

I didn't notice that cbdingen had a new release. I though a new version would appear on the Github repo:

[ultimaweapon]

I though we need raw_window_handle to access Vulkan surface and Metal layer?

[SuchAFuriousDeath]

I though we need raw_window_handle to access Vulkan surface and Metal layer?

Eventually, but we do not depend on it right now. I'll put it back once it is actually required.