!28 Delete the code that adapts to lib/autoconf/c.m4

From: @fly_fzc 
Reviewed-by: @jiayi0118 
Signed-off-by: @jiayi0118

autoconf.spec

@@ -3,7 +3,7 @@
 
 Name:           autoconf
 Version:        2.71
-Release:        5
+Release:        6
 Summary:        An extensible package to automatically configure software source code packages
 License:        GPLv2+ and GPLv3+ and GFDL-1.3-only
 URL:            https://www.gnu.org/software/%{name}/
@@ -34,13 +34,6 @@ can use, in the form of M4 macro calls.
 
 %prep
 %autosetup -n %{name}-%{version} -p1
-echo 'main() {}' | g++ -E -v - > g++.log 2>&1
-grep -rn -m 1 COLLECT_GCC_OPTIONS g++.log > option.log
-GCC_OPTION=`cat option.log`
-if [[ $GCC_OPTION != *"fsigned-char"* ]];then
-  sed -i "s|((char) -1) < 0|((unsigned char) -1) < 0|g" lib/autoconf/c.m4
-fi
-rm -rf g++.log option.log
 
 %build
 export EMACS=%{_bindir}/emacs
@@ -80,6 +73,9 @@ fi
 
 
 %changelog
+* Thu Jun 13 2024 fuanan <fuanan3@h-partners.com> - 2.71-6
+- Delete the code that adapts to lib/autoconf/c.m4
+
 * Tue May 14 2024 Ge Wang <wang__ge@126.com> - 2.71-5
 - Adapt signed-char check macro for default unsigned evironment