chore: edit and move tests I deleted `ui/non-copyable-void.rs`: added in https://github.com/rust-lang/rust/commit/ab4105d9e8b7c0719343aa2e4edd15cae0b7c947 to test that "nonconstructable" enums are "noncopyable", but these properties are not correlated anymore. Second commit is kinda messy because I moved/edited/renamed some files at the same time, but I deleted nothing there.