remove mention of cfg_panic from library tests

Author: Charisee

library/core/tests/array.rs

@@ -392,7 +392,6 @@ fn array_try_from_fn() {
     assert_eq!(another_array, Err(SomeError::Foo));
 }
 
-#[cfg(not(panic = "abort"))]
 #[test]
 fn array_try_from_fn_drops_inserted_elements_on_err() {
     static DROP_COUNTER: AtomicUsize = AtomicUsize::new(0);
@@ -416,7 +415,6 @@ fn array_try_from_fn_drops_inserted_elements_on_err() {
     assert_eq!(DROP_COUNTER.load(Ordering::SeqCst), 2);
 }
 
-#[cfg(not(panic = "abort"))]
 #[test]
 fn array_try_from_fn_drops_inserted_elements_on_panic() {
     static DROP_COUNTER: AtomicUsize = AtomicUsize::new(0);
@@ -440,7 +438,6 @@ fn array_try_from_fn_drops_inserted_elements_on_panic() {
     assert_eq!(DROP_COUNTER.load(Ordering::SeqCst), 2);
 }
 
-#[cfg(not(panic = "abort"))]
 // https://stackoverflow.com/a/59211505
 fn catch_unwind_silent<F, R>(f: F) -> std::thread::Result<R>
 where

library/core/tests/iter/adapters/zip.rs

@@ -233,7 +233,6 @@ fn test_zip_trusted_random_access_composition() {
 }
 
 #[test]
-#[cfg(panic = "unwind")]
 fn test_zip_trusted_random_access_next_back_drop() {
     use std::panic::catch_unwind;
     use std::panic::AssertUnwindSafe;

library/core/tests/mem.rs

@@ -1,6 +1,5 @@
 use core::mem::*;
 
-#[cfg(panic = "unwind")]
 use std::rc::Rc;
 
 #[test]
@@ -190,7 +189,6 @@ fn uninit_write_slice_cloned_panic_gt() {
 }
 
 #[test]
-#[cfg(panic = "unwind")]
 fn uninit_write_slice_cloned_mid_panic() {
     use std::panic;