#4852: Remove dead code in every thread implementation, unused for many years.
diff --git a/Python/thread_os2.h b/Python/thread_os2.h
index 12eeed5..eee8de6 100644
--- a/Python/thread_os2.h
+++ b/Python/thread_os2.h
@@ -68,56 +68,16 @@
 #endif
 }
 
-static void
-do_PyThread_exit_thread(int no_cleanup)
+void
+PyThread_exit_thread(void)
 {
 	dprintf(("%ld: PyThread_exit_thread called\n",
 		 PyThread_get_thread_ident()));
 	if (!initialized)
-		if (no_cleanup)
-			_exit(0);
-		else
-			exit(0);
+		exit(0);
 	_endthread();
 }
 
-void 
-PyThread_exit_thread(void)
-{
-	do_PyThread_exit_thread(0);
-}
-
-void 
-PyThread__exit_thread(void)
-{
-	do_PyThread_exit_thread(1);
-}
-
-#ifndef NO_EXIT_PROG
-static void 
-do_PyThread_exit_prog(int status, int no_cleanup)
-{
-	dprintf(("PyThread_exit_prog(%d) called\n", status));
-	if (!initialized)
-		if (no_cleanup)
-			_exit(status);
-		else
-			exit(status);
-}
-
-void 
-PyThread_exit_prog(int status)
-{
-	do_PyThread_exit_prog(status, 0);
-}
-
-void 
-PyThread__exit_prog(int status)
-{
-	do_PyThread_exit_prog(status, 1);
-}
-#endif /* NO_EXIT_PROG */
-
 /*
  * Lock support.  This is implemented with an event semaphore and critical
  * sections to make it behave more like a posix mutex than its OS/2