Remove SubtypeId from AnyUserData and instead add Value::Other variant that will cover any unknown types (eg. LuaJIT CData)

src/types.rs

@@ -28,14 +28,6 @@ pub type Integer = ffi::lua_Integer;
 /// Type of Lua floating point numbers.
 pub type Number = ffi::lua_Number;
 
-// Represents different subtypes wrapped in AnyUserData
-#[derive(Debug, Copy, Clone, Eq, PartialEq)]
-pub(crate) enum SubtypeId {
-    None,
-    #[cfg(feature = "luajit")]
-    CData,
-}
-
 /// A "light" userdata value. Equivalent to an unmanaged raw pointer.
 #[derive(Debug, Copy, Clone, Eq, PartialEq)]
 pub struct LightUserData(pub *mut c_void);