[libc] Remove unused _Thread_local define from headers. (#156967)

It was added in dd33f9cdef9f6209aa34713e1417f4a2e24e5ca6 to describe
thread-local errno, but is no longer used in the codebase (with the
exception of a single integration test, but the llvm-libc-provided
`#define _Thread_local thread_local` is not needed there anyway, since
`_Thread_local` is a keyword from C11 onwards.
This commit is contained in:
Alexey Samsonov 2025-09-04 14:02:43 -07:00 committed by GitHub
parent 4e607599e6
commit 369b2a783d
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@ -37,9 +37,6 @@
#undef _Alignof
#define _Alignof alignof
#undef _Thread_local
#define _Thread_local thread_local
#undef __NOEXCEPT
#if __cplusplus >= 201103L
#define __NOEXCEPT noexcept