Merge pull request #79837 from swiftlang/egorzhdan/pthread-test-reenable

[cxx-interop] Re-enable a test for Obj-C compatibility

Author: egorzhdan

test/Interop/Cxx/objc-correctness/pthread_mutexattr_t.swift

@@ -1,9 +1,6 @@
 // RUN: %target-typecheck-verify-swift -verify-ignore-unknown -I %S/Inputs -enable-objc-interop -enable-experimental-cxx-interop
 // REQUIRES: OS=macosx
 
-// Temporarily disable (rdar://128544755)
-// REQUIRES: rdar128544755
-
 import Darwin
 
 _ = pthread_mutexattr_t() // expected-warning {{'init()' is deprecated: This zero-initializes the backing memory of the struct}}