Remove local GC allocation count flush in pystate.c

Removed flushing of thread's local GC allocation count before thread state deletion.

Author: kevmo314

Python/pystate.c

@@ -1810,14 +1810,6 @@ tstate_delete_common(PyThreadState *tstate, int release_gil)
     assert(tstate_impl->refcounts.values == NULL);
 #endif
 
-#ifdef Py_GIL_DISABLED
-    // Flush the thread's local GC allocation count to the global count
-    // before the thread state is deleted, otherwise the count is lost.
-    _Py_atomic_add_int(&tstate->interp->gc.young.count,
-                       (int)tstate_impl->gc.alloc_count);
-    tstate_impl->gc.alloc_count = 0;
-#endif
-
 #if _Py_TIER2
     _PyThreadStateImpl *_tstate = (_PyThreadStateImpl *)tstate;
     if (_tstate->jit_tracer_state.code_buffer != NULL) {