Remove _Py_thread_local macro definition

Author: ZeroIntensity

Include/internal/pycore_pystate.h

@@ -85,22 +85,6 @@ _Py_ThreadCanHandleSignals(PyInterpreterState *interp)
     return (_Py_IsMainThread() && _Py_IsMainInterpreter(interp));
 }
 
-/* Definition of the _Py_thread_local macro. In reality, this should really be
- * in pyport.h, but some extensions define Py_BUILD_CORE after including that.
- * So, instead of breaking things, we just put this here for now. */
-
-#ifdef thread_local
-#  define _Py_thread_local thread_local
-#elif __STDC_VERSION__ >= 201112L && !defined(__STDC_NO_THREADS__)
-#  define _Py_thread_local _Thread_local
-#elif defined(_MSC_VER)  /* AKA NT_THREADS */
-#  define _Py_thread_local __declspec(thread)
-#elif defined(__GNUC__)  /* includes clang */
-#  define _Py_thread_local __thread
-#else
-#  error "no supported thread-local variable storage classifier"
-#endif
-
 /* Variable and static inline functions for in-line access to current thread
    and interpreter state */