Stabilize the map/value methods on ControlFlow

And fix the stability attribute on the `pub use` in `core::ops`.

compiler/rustc_hir_analysis/src/lib.rs

@@ -63,7 +63,6 @@ This API is completely unstable and subject to change.
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![doc(rust_logo)]
 #![feature(assert_matches)]
-#![feature(control_flow_enum)]
 #![feature(if_let_guard)]
 #![feature(iter_intersperse)]
 #![feature(let_chains)]