[experimental] try to make GitHub Pages history smaller

docs/tools/release.sh

@@ -27,7 +27,6 @@ then
     git config user.email "robot-clickhouse@yandex-team.ru"
     git config user.name "robot-clickhouse"
     git rm -rf *
-    git commit -a -m "wipe old release"
     cp -R "${BUILD_DIR}"/* .
     echo -n "test.clickhouse.tech" > CNAME
     echo -n "" > README.md