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diff --git a/Build/source/texk/web2c/luatexdir/zziplib/zzip/plugin.h b/Build/source/texk/web2c/luatexdir/zziplib/zzip/plugin.h
deleted file mode 100644
index b6ccbe8a66f..00000000000
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-/*
- * Author:
- * Guido Draheim <guidod@gmx.de>
- *
- * Copyright (c) 2002,2003 Guido Draheim
- * All rights reserved
- * use under the restrictions of the
- * Lesser GNU General Public License
- * or alternatively the restrictions
- * of the Mozilla Public License 1.1
- *
- * the interfaces for the plugin_io system
- *
- * Using the following you can provide your own file I/O functions to
- * e.g. read data directly from memory, provide simple
- * "encryption"/"decryption" of on-disk .zip-files...
- * Note that this currently only provides a subset of the functionality
- * in zziplib. It does not attempt to provide any directory functions,
- * but if your program 1) only uses ordinary on-disk files and you
- * just want this for file obfuscation, or 2) you only access your
- * .zip archives using zzip_open & co., this is sufficient.
- *
- * Currently the default io are the POSIX functions, except
- * for 'filesize' that is zziplibs own provided zzip_filesize function,
- * using standard POSIX fd's. You are however free to replace this with
- * whatever data type you need, so long as you provide implementations
- * for all the functions, and the data type fits an int.
- *
- * all functions receiving ext_io are able to cope with both arguments
- * set to zero which will let them default to a ZIP ext and posix io.
- */
-#ifndef _ZZIP_PLUGIN_H /* zzip-io.h */
-#define _ZZIP_PLUGIN_H 1
-
-#include <zzip/zzip.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* we have renamed zzip_plugin_io.use_mmap to zzip_plugin_io.sys */
-#define ZZIP_PLUGIN_IO_SYS 1
-
-struct zzip_plugin_io { /* use "zzip_plugin_io_handlers" in applications !! */
- int (*open)(zzip_char_t* name, int flags, ...);
- int (*close)(int fd);
- zzip_ssize_t (*read)(int fd, void* buf, zzip_size_t len);
- zzip_off_t (*seeks)(int fd, zzip_off_t offset, int whence);
- zzip_off_t (*filesize)(int fd);
- long sys;
- long type;
- zzip_ssize_t (*write)(int fd, _zzip_const void* buf, zzip_size_t len);
-};
-
-typedef union _zzip_plugin_io
-{
- struct zzip_plugin_io fd;
- struct { void* padding[8]; } ptr;
-} zzip_plugin_io_handlers;
-
-#define _zzip_plugin_io_handlers zzip_plugin_io_handlers
-/* for backward compatibility, and the following to your application code:
- * #ifndef _zzip_plugin_io_handlers
- * #define _zzip_plugin_io_handlers struct zzip_plugin_io
- */
-typedef zzip_plugin_io_handlers* zzip_plugin_io_handlers_t;
-
-#ifdef ZZIP_LARGEFILE_RENAME
-#define zzip_filesize zzip_filesize64
-#define zzip_get_default_io zzip_get_default_io64
-#define zzip_init_io zzip_init_io64
-#endif
-
-_zzip_export zzip_off_t
-zzip_filesize(int fd);
-
-/* get the default file I/O functions */
-_zzip_export zzip_plugin_io_t zzip_get_default_io(void);
-
-/*
- * Initializes a zzip_plugin_io_t to the zziplib default io.
- * This is useful if you only want to override e.g. the 'read' function.
- * all zzip functions that can receive a zzip_plugin_io_t can
- * handle a zero pointer in that place and default to posix io.
- */
-_zzip_export
-int zzip_init_io(zzip_plugin_io_handlers_t io, int flags);
-
-/* zzip_init_io flags : */
-# define ZZIP_IO_USE_MMAP 1
-
-#ifdef __cplusplus
-};
-#endif
-
-#endif