[PATCH] nptl: fix __builtin_thread_pointer detection on LoongArch

[caiyinyu]

this is version 3 disscussed in https://sourceware.org/pipermail/libc-alpha/2024-November/161236.html
v2: https://sourceware.org/pipermail/libc-alpha/2024-November/161213.html
v1: https://sourceware.org/pipermail/libc-alpha/2024-November/161185.html

---
 sysdeps/loongarch/nptl/thread_pointer.h | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/sysdeps/loongarch/nptl/thread_pointer.h b/sysdeps/loongarch/nptl/thread_pointer.h
index 5dec2ef4c6..3c5367af24 100644
--- a/sysdeps/loongarch/nptl/thread_pointer.h
+++ b/sysdeps/loongarch/nptl/thread_pointer.h
@@ -19,18 +19,12 @@
 #ifndef _SYS_THREAD_POINTER_H
 #define _SYS_THREAD_POINTER_H
 
-#include <sys/cdefs.h>
-
 static inline void *
 __thread_pointer (void)
 {
-#if __glibc_has_builtin (__builtin_thread_pointer)
-  return __builtin_thread_pointer ();
-#else
   void *__thread_register;
   __asm__ ("move %0, $tp" : "=r" (__thread_register));
   return __thread_register;
-#endif
 }
 
 #endif /* _SYS_THREAD_POINTER_H */
-- 
2.45.2