remove unused files and modify package.json

Author: koji

.storybook/main.ts

@@ -73,6 +73,5 @@
     "extends": [
       "plugin:storybook/recommended"
     ]
-  },
-  "packageManager": "pnpm@10.11.1+sha512.e519b9f7639869dc8d5c3c5dfef73b3f091094b0a006d7317353c72b124e80e1afd429732e28705ad6bfa1ee879c1fce46c128ccebd3192101f43dd67c667912"
+  }
 }