Remove unused third_party/talloc

third_party/talloc/libreplace/system/aio.h

-#ifndef _system_aio_h
-#define _system_aio_h
-/* 
-   Unix SMB/CIFS implementation.
-
-   AIO system include wrappers
-
-   Copyright (C) Andrew Tridgell 2006
-   
-     ** NOTE! The following LGPL license applies to the replace
-     ** library. This does NOT imply that all of Samba is released
-     ** under the LGPL
-   
-   This 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 3 of the License, or (at your option) any later version.
-
-   This 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 this library; if not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifdef HAVE_LIBAIO_H
-#include <libaio.h>
-#endif
-
-#endif