Remove the `unmarked_api` feature
Closes
@@ -2463,11 +2463,6 @@ The currently implemented features of the reference compiler are:
* `unboxed_closures` - Rust's new closure design, which is currently a work in
progress feature with many known bugs.
-* `unmarked_api` - Allows use of items within a `#![staged_api]` crate
- which have not been marked with a stability marker.
- Such items should not be allowed by the compiler to exist,
- so if you need this there probably is a compiler bug.
-
* `allow_internal_unstable` - Allows `macro_rules!` macros to be tagged with the
`#[allow_internal_unstable]` attribute, designed
to allow `std` macros to call
