ci: trying to fix centos:8 build

ci/install_dependencies.sh

@@ -60,10 +60,7 @@ case "$distro_id" in
         # enable copr for gtest
         curl https://copr.fedorainfracloud.org/coprs/defolos/devel/repo/epel-7/defolos-devel-epel-7.repo > /etc/yum.repos.d/_copr_defolos-devel.repo
         yum clean all
-        yum -y install gcc-c++ clang cmake3 make ccache expat-devel zlib-devel libssh-devel libcurl-devel gtest-devel which python3 dos2unix
-        # symlink up to date versions of cmake to 'default' name
-        mv /bin/cmake /bin/.cmake.old
-        ln -s /bin/cmake3 /bin/cmake
+        yum -y install gcc-c++ clang cmake make ccache expat-devel zlib-devel libssh-devel libcurl-devel gtest-devel which python3 dos2unix
         ;;
 
     'opensuse'|'opensuse-tumbleweed')