stabilize extract_if

compiler/rustc_errors/src/lib.rs

@@ -15,7 +15,6 @@
 #![feature(box_into_inner)]
 #![feature(box_patterns)]
 #![feature(error_reporter)]
-#![feature(extract_if)]
 #![feature(if_let_guard)]
 #![feature(let_chains)]
 #![feature(negative_impls)]

compiler/rustc_lint/src/lib.rs

@@ -27,7 +27,6 @@
 #![feature(array_windows)]
 #![feature(assert_matches)]
 #![feature(box_patterns)]
-#![feature(extract_if)]
 #![feature(if_let_guard)]
 #![feature(iter_order_by)]
 #![feature(let_chains)]

compiler/rustc_metadata/src/lib.rs

@@ -5,7 +5,6 @@
 #![feature(coroutines)]
 #![feature(decl_macro)]
 #![feature(error_iter)]
-#![feature(extract_if)]
 #![feature(file_buffered)]
 #![feature(if_let_guard)]
 #![feature(iter_from_coroutine)]

compiler/rustc_middle/src/lib.rs

@@ -45,7 +45,6 @@
 #![feature(decl_macro)]
 #![feature(discriminant_kind)]
 #![feature(extern_types)]
-#![feature(extract_if)]
 #![feature(file_buffered)]
 #![feature(if_let_guard)]
 #![feature(intra_doc_pointers)]

compiler/rustc_resolve/src/lib.rs

@@ -15,7 +15,6 @@
 #![doc(rust_logo)]
 #![feature(assert_matches)]
 #![feature(box_patterns)]
-#![feature(extract_if)]
 #![feature(if_let_guard)]
 #![feature(iter_intersperse)]
 #![feature(let_chains)]

compiler/rustc_trait_selection/src/lib.rs

@@ -20,7 +20,6 @@
 #![feature(associated_type_defaults)]
 #![feature(box_patterns)]
 #![feature(cfg_version)]
-#![feature(extract_if)]
 #![feature(if_let_guard)]
 #![feature(iter_intersperse)]
 #![feature(iterator_try_reduce)]