nptl: Remove unused __libc_pthread_init function

Fixes commit 732139dabe
("Linux: Move __reclaim_stacks into the fork implementation in
libc").

nptl/Makefile

@@ -45,7 +45,6 @@ routines = \
   futex-internal \
   libc-cleanup \
   libc_multiple_threads \
-  libc_pthread_init \
   lowlevellock \
   nptl-stack \
   nptl_deallocate_tsd \

nptl/libc_pthread_init.c

@@ -1,35 +0,0 @@
-/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
-
-#include <unistd.h>
-#include <list.h>
-#include <register-atfork.h>
-#include <dl-sysdep.h>
-#include <tls.h>
-#include <string.h>
-#include <pthreadP.h>
-#include <libc-lock.h>
-#include <sysdep.h>
-#include <ldsodefs.h>
-
-void
-__libc_pthread_init (void (*reclaim) (void))
-{
-  /* Called by a child after fork.  */
-  __register_atfork (NULL, NULL, reclaim, NULL);
-}