Push out expat to idf-extra-components repository

This component will be used through IDF component manager.

.flake8

@@ -144,7 +144,6 @@ exclude =
         components/bt/host/nimble/nimble,
         components/cmock/CMock,
         components/esptool_py/esptool,
-        components/expat/expat,
         components/json/cJSON,
         components/mbedtls/mbedtls,
         components/openthread/openthread,

.gitlab/CODEOWNERS

@@ -102,7 +102,6 @@
 /components/esp_wifi/                 @esp-idf-codeowners/wifi
 /components/espcoredump/              @esp-idf-codeowners/tools
 /components/esptool_py/               @esp-idf-codeowners/tools
-/components/expat/                    @esp-idf-codeowners/app-utilities
 /components/fatfs/                    @esp-idf-codeowners/storage
 /components/fatfs/**/*.py             @esp-idf-codeowners/tools
 /components/freemodbus/               @esp-idf-codeowners/peripherals

.gitlab/ci/rules.yml

@@ -164,7 +164,6 @@
   - "components/esp_phy/lib"
   - "components/esp_wifi/lib"
   - "components/esptool_py/esptool"
-  - "components/expat/expat"
   - "components/json/cJSON"
   - "components/lwip/lwip"
   - "components/mbedtls/mbedtls"

.gitmodules

@@ -35,10 +35,6 @@
 	path = components/asio/asio
 	url = ../../espressif/asio.git
 
-[submodule "components/expat/expat"]
-	path = components/expat/expat
-	url = ../../libexpat/libexpat.git
-
 [submodule "components/lwip/lwip"]
 	path = components/lwip/lwip
 	url = ../../espressif/esp-lwip.git

docs/en/COPYRIGHT.rst

@@ -35,8 +35,6 @@ These third party libraries can be included into the application (firmware) prod
 
 * `libcoap`_ COAP library Copyright (c) 2010-2017 Olaf Bergmann and others, is licensed under 2-clause BSD license as described in :component_file:`LICENSE file <coap/libcoap/LICENSE>` and :component_file:`COPYING file <coap/libcoap/COPYING>` .
 
-* `libexpat`_ XML parsing library Copyright (c) 1998-2000 Thai Open Source Software Center Ltd and Clark Cooper, Copyright (c) 2001-2017 Expat maintainers, is licensed under MIT license as described in :component_file:`COPYING file <expat/expat/expat/COPYING>`.
-
 * `FatFS`_ library, Copyright (C) 2017 ChaN, is licensed under :component_file:`a BSD-style license <fatfs/src/ff.h#L1-L18>`.
 
 * `cJSON`_ library, Copyright (c) 2009-2017 Dave Gamble and cJSON contributors, is licensed under MIT license as described in :component_file:`LICENSE file <json/cJSON/LICENSE>`.
@@ -164,7 +162,6 @@ Copyright (C) 2011, ChaN, all right reserved.
 .. _libcoap: https://github.com/obgm/libcoap
 .. _fatfs: http://elm-chan.org/fsw/ff/00index_e.html
 .. _cJSON: https://github.com/DaveGamble/cJSON
-.. _libexpat: https://github.com/libexpat/libexpat
 .. _micro-ecc: https://github.com/kmackay/micro-ecc
 .. _OpenBSD SD/MMC driver: https://github.com/openbsd/src/blob/f303646/sys/dev/sdmmc/sdmmc.c
 .. _Mbed TLS: https://github.com/ARMmbed/mbedtls

tools/ci/check_copyright_ignore.txt

@@ -844,8 +844,6 @@ components/espcoredump/src/core_dump_uart.c
 components/espcoredump/src/port/riscv/core_dump_port.c
 components/espcoredump/test/test_espcoredump.py
 components/espcoredump/test_apps/main/test_core_dump.c
-components/expat/port/include/expat_config.h
-components/expat/test/test_expat.c
 components/fatfs/diskio/diskio.c
 components/fatfs/diskio/diskio_impl.h
 components/fatfs/diskio/diskio_rawflash.c

tools/ci/check_public_headers_exceptions.txt

@@ -59,8 +59,6 @@ components/mdns/include/mdns_console.h
 components/esp_serial_slave_link/include/esp_serial_slave_link/essl.h
 components/esp_serial_slave_link/include/esp_serial_slave_link/essl_sdio.h
 
-components/expat/
-
 components/fatfs/vfs/vfs_fat_internal.h
 components/fatfs/src/ffconf.h
 

tools/ci/static-analysis-rules.yml

@@ -20,7 +20,6 @@ skip:
   - "components/esp_wifi/lib"
   - "components/esp_wifi/lib_esp32"
   - "components/esptool_py/esptool"
-  - "components/expat/expat"
   - "components/ieee802154/lib"
   - "components/json/cJSON"
   - "components/lwip/lwip"