Rollup merge of #98597 - wwylele:patch-1, r=Mark-Simulacrum

Remove unstable CStr/CString change from 1.62 release note

(Discovered in rust-lang/rust#98571 (comment))

The change to move CStr/CString to core/alloc is currently behind feature flags as stated in rust-lang/rust#98314

Author: Dylan-DPC