chore: remove old prebuild schedule generator files

Author: Link1515

package.json

@@ -10,7 +10,6 @@
     "node": ">=22"
   },
   "scripts": {
-    "pre": "node prebuild/index.js",
     "build-production": "cross-env BUILD_MODE=production astro build",
     "preview-production": "cross-env BUILD_MODE=production astro preview",
     "build": "cross-env BUILD_MODE=staging astro build",