Rollup merge of #145465 - Kivooeo:stabilize-array_repeat, r=joboet

Stabilize `array_repeat` feature

This closes [tracking issue](https://github.com/rust-lang/rust/issues/126695) and stabilises `array::repeat`

library/core/src/array/mod.rs

@@ -41,8 +41,6 @@ pub use iter::IntoIter;
 ///
 /// Creating multiple copies of a `String`:
 /// ```rust
-/// #![feature(array_repeat)]
-///
 /// use std::array;
 ///
 /// let string = "Hello there!".to_string();
@@ -50,7 +48,7 @@ pub use iter::IntoIter;
 /// assert_eq!(strings, ["Hello there!", "Hello there!"]);
 /// ```
 #[inline]
-#[unstable(feature = "array_repeat", issue = "126695")]
+#[stable(feature = "array_repeat", since = "CURRENT_RUSTC_VERSION")]
 pub fn repeat<T: Clone, const N: usize>(val: T) -> [T; N] {
     from_trusted_iterator(repeat_n(val, N))
 }

tests/codegen-llvm/array-repeat.rs

@@ -1,7 +1,6 @@
 //@ compile-flags: -Copt-level=3
 
 #![crate_type = "lib"]
-#![feature(array_repeat)]
 
 use std::array::repeat;
 

tests/codegen-llvm/iter-repeat-n-trivial-drop.rs

@@ -4,7 +4,6 @@
 
 #![crate_type = "lib"]
 #![feature(iter_repeat_n)]
-#![feature(array_repeat)]
 
 #[derive(Clone)]
 pub struct NotCopy(u16);