Remove Lua::into_static and Lua::from_static (undocumented).

src/state.rs

@@ -344,36 +344,6 @@ impl Lua {
         loaded.raw_set(modname, Nil)
     }
 
-    /// Consumes and leaks `Lua` object, returning a static reference `&'static Lua`.
-    ///
-    /// This function is useful when the `Lua` object is supposed to live for the remainder
-    /// of the program's life.
-    ///
-    /// Dropping the returned reference will cause a memory leak. If this is not acceptable,
-    /// the reference should first be wrapped with the [`Lua::from_static`] function producing a
-    /// `Lua`. This `Lua` object can then be dropped which will properly release the allocated
-    /// memory.
-    ///
-    /// [`Lua::from_static`]: #method.from_static
-    ///
-    /// FIXME: remove
-    #[doc(hidden)]
-    pub fn into_static(self) -> &'static Self {
-        Box::leak(Box::new(self))
-    }
-
-    /// Constructs a `Lua` from a static reference to it.
-    ///
-    /// # Safety
-    /// This function is unsafe because improper use may lead to memory problems or undefined
-    /// behavior.
-    ///
-    /// FIXME: remove
-    #[doc(hidden)]
-    pub unsafe fn from_static(lua: &'static Lua) -> Self {
-        *Box::from_raw(lua as *const Lua as *mut Lua)
-    }
-
     // Executes module entrypoint function, which returns only one Value.
     // The returned value then pushed onto the stack.
     #[doc(hidden)]