Remove rimraf in preview

preview/package.json

@@ -17,7 +17,7 @@
     "js-minify": "pnpm run js-minify-demo && pnpm run js-minify-theme",
     "js-minify-demo": "terser --compress passes=2 --mangle --comments \"/^!/\" --source-map \"content=dist/preview/js/demo.js.map,includeSources,url=demo.min.js.map\" --output dist/preview/js/demo.min.js dist/preview/js/demo.js",
     "js-minify-theme": "terser --compress passes=2 --mangle --comments \"/^!/\" --source-map \"content=dist/preview/js/demo-theme.js.map,includeSources,url=demo-theme.min.js.map\" --output dist/preview/js/demo-theme.min.js dist/preview/js/demo-theme.js", 
-    "clean": "rimraf dist demo",
+    "clean": "shx rm -rf dist demo",
     "html": "eleventy",
     "svg-optimize": "svgo -f svg/brand --pretty",
     "unused-files": "node build/unused-files.mjs",