Revert tests added by PR 81167.

Author: pnkfelix

library/core/tests/const_ptr.rs

@@ -49,53 +49,3 @@ fn mut_ptr_read() {
     const UNALIGNED: u16 = unsafe { UNALIGNED_PTR.read_unaligned() };
     assert_eq!(UNALIGNED, u16::from_ne_bytes([0x23, 0x45]));
 }
-
-#[test]
-fn write() {
-    use core::ptr;
-
-    const fn write_aligned() -> i32 {
-        let mut res = 0;
-        unsafe {
-            ptr::write(&mut res as *mut _, 42);
-        }
-        res
-    }
-    const ALIGNED: i32 = write_aligned();
-    assert_eq!(ALIGNED, 42);
-
-    const fn write_unaligned() -> [u16; 2] {
-        let mut two_aligned = [0u16; 2];
-        unsafe {
-            let unaligned_ptr = (two_aligned.as_mut_ptr() as *mut u8).add(1) as *mut u16;
-            ptr::write_unaligned(unaligned_ptr, u16::from_ne_bytes([0x23, 0x45]));
-        }
-        two_aligned
-    }
-    const UNALIGNED: [u16; 2] = write_unaligned();
-    assert_eq!(UNALIGNED, [u16::from_ne_bytes([0x00, 0x23]), u16::from_ne_bytes([0x45, 0x00])]);
-}
-
-#[test]
-fn mut_ptr_write() {
-    const fn aligned() -> i32 {
-        let mut res = 0;
-        unsafe {
-            (&mut res as *mut i32).write(42);
-        }
-        res
-    }
-    const ALIGNED: i32 = aligned();
-    assert_eq!(ALIGNED, 42);
-
-    const fn write_unaligned() -> [u16; 2] {
-        let mut two_aligned = [0u16; 2];
-        unsafe {
-            let unaligned_ptr = (two_aligned.as_mut_ptr() as *mut u8).add(1) as *mut u16;
-            unaligned_ptr.write_unaligned(u16::from_ne_bytes([0x23, 0x45]));
-        }
-        two_aligned
-    }
-    const UNALIGNED: [u16; 2] = write_unaligned();
-    assert_eq!(UNALIGNED, [u16::from_ne_bytes([0x00, 0x23]), u16::from_ne_bytes([0x45, 0x00])]);
-}