fix: resolve unused variable warning and revert tailwind config conflict

frontend/tailwind.config.js

@@ -12,10 +12,5 @@ module.exports = {
       }
     },
   },
-  plugins: [
-    require('daisyui'),
-  ],
-  daisyui: {
-    themes: ["light", "dark", "dim", "nord"],
-  },
+  plugins: [],
 }