[LyX/master] Remove traces of old 1.7.0 version of win_api

[Kornel Benko]

commit 08179b2c673a3e843461fc65fd1e0741fb896a68
Author: Kornel Benko <kornel at lyx.org>
Date:   Wed Sep 17 09:07:50 2025 +0200

    Remove traces of old 1.7.0 version of win_api
    
    Our version of hunspell 1.7.2 does not contain this directory
---
 3rdparty/hunspell/CMakeLists.txt | 5 -----
 3rdparty/hunspell/Makefile.am    | 3 +--
 2 files changed, 1 insertion(+), 7 deletions(-)

diff --git a/3rdparty/hunspell/CMakeLists.txt b/3rdparty/hunspell/CMakeLists.txt
index 38e82f0794..56a0c6e2bf 100644
--- a/3rdparty/hunspell/CMakeLists.txt
+++ b/3rdparty/hunspell/CMakeLists.txt
@@ -19,11 +19,6 @@ set(SRCDIR ${CMAKE_CURRENT_SOURCE_DIR}/${HUNSPELL_VERSION}/src)
 
 include_directories(./ ${SRCDIR}/hunspell)
 
-if(WIN32)
-    include_directories(${SRCDIR}/win_api)
-    set(HUNCONFIG ${SRCDIR}/win_api/config.h)
-endif()
-
 # LIBS
 set(SRCS
     ${SRCDIR}/hunspell/affentry.cxx
diff --git a/3rdparty/hunspell/Makefile.am b/3rdparty/hunspell/Makefile.am
index 3bab12337f..411c3bb11a 100644
--- a/3rdparty/hunspell/Makefile.am
+++ b/3rdparty/hunspell/Makefile.am
@@ -44,5 +44,4 @@ liblyxhunspell_a_SOURCES = \
 	1.7.2/src/hunspell/suggestmgr.cxx \
 	1.7.2/src/hunspell/suggestmgr.hxx \
 	1.7.2/src/hunspell/utf_info.hxx \
-	1.7.2/src/hunspell/w_char.hxx \
-	1.7.2/src/win_api/config.h
+	1.7.2/src/hunspell/w_char.hxx