backends/drm: remove drm lease layers
They just add more code and more potential problems, and the difference in VRAM usage is very minimal (and will in the future be 0 with a custom gbm swapchain instead of using gbm_surface)
They just add more code and more potential problems, and the difference in VRAM usage is very minimal (and will in the future be 0 with a custom gbm swapchain instead of using gbm_surface)