remove some unnecessary feature(lang_items)

Author: RalfJung

tests/ui/repr/16-bit-repr-c-enum.rs

@@ -7,7 +7,7 @@
 //@ [msp430] needs-llvm-components: msp430
 //@ [msp430] compile-flags: --target=msp430-none-elf --crate-type=rlib
 //@ ignore-backends: gcc
-#![feature(no_core, lang_items, intrinsics, staged_api, rustc_attrs)]
+#![feature(no_core, intrinsics, staged_api, rustc_attrs)]
 #![no_core]
 #![crate_type = "lib"]
 #![stable(feature = "intrinsics_for_test", since = "3.3.3")]

tests/ui/repr/repr-c-dead-variants.rs

@@ -1,4 +1,4 @@
-#![feature(no_core, rustc_attrs, lang_items)]
+#![feature(no_core, rustc_attrs)]
 #![allow(dead_code)]
 #![crate_type = "lib"]
 #![no_std]

tests/ui/repr/repr_align_greater_usize.rs

@@ -9,7 +9,7 @@
 // We should fail to compute alignment for types aligned higher than usize::MAX.
 // We can't handle alignments that require all 32 bits, so this only affects 16-bit.
 
-#![feature(lang_items, no_core)]
+#![feature(no_core)]
 #![no_core]
 #![crate_type = "lib"]
 

tests/ui/sanitizer/cfg-kasan.rs

@@ -16,7 +16,7 @@
 //@ ignore-backends: gcc
 
 #![crate_type = "rlib"]
-#![feature(cfg_sanitize, no_core, lang_items)]
+#![feature(cfg_sanitize, no_core)]
 #![no_core]
 
 extern crate minicore;

tests/ui/sanitizer/cfg.rs

@@ -21,7 +21,7 @@
 //@[thread]compile-flags:  -Zsanitizer=thread
 //@ ignore-backends: gcc
 
-#![feature(cfg_sanitize, no_core, lang_items)]
+#![feature(cfg_sanitize, no_core)]
 #![crate_type="lib"]
 #![no_core]
 

tests/ui/static/static_sized_requirement.rs

@@ -1,7 +1,7 @@
 //@ add-core-stubs
 //@ check-pass
 
-#![feature(no_core, lang_items)]
+#![feature(no_core)]
 #![no_core]
 #![crate_type = "lib"]
 

tests/ui/unboxed-closures/unboxed-closures-all-traits.rs

@@ -1,5 +1,4 @@
 //@ run-pass
-#![feature(lang_items)]
 
 fn a<F:Fn(isize, isize) -> isize>(f: F) -> isize {
     f(1, 2)

tests/ui/unboxed-closures/unboxed-closures-blanket-fn-mut.rs

@@ -2,8 +2,6 @@
 #![allow(unused_variables)]
 // Test that you can supply `&F` where `F: FnMut()`.
 
-#![feature(lang_items)]
-
 fn a<F:FnMut() -> i32>(mut f: F) -> i32 {
     f()
 }

tests/ui/unboxed-closures/unboxed-closures-blanket-fn.rs

@@ -2,8 +2,6 @@
 #![allow(unused_variables)]
 // Test that you can supply `&F` where `F: Fn()`.
 
-#![feature(lang_items)]
-
 fn a<F:Fn() -> i32>(f: F) -> i32 {
     f()
 }