docs: remove some notes that are no longer necessary

Author: dannyhw

website/src/latest/docs/features/nativewind.mdx

@@ -37,22 +37,6 @@ These additional dependencies (`postcss`, `postcss-loader`, and `autoprefixer`)
 
 ## Usage
 
-:::info{title="Webpack specific configuration"}
-If you are using Webpack (not Rspack), you need to add the following configuration to your `babel.config.js`:
-
-```js title="babel.config.js"
-plugins: [
-  [
-    '@babel/plugin-transform-react-jsx',
-    {
-      runtime: 'automatic',
-      importSource: 'nativewind',
-    },
-  ],
-],
-```
-:::
-
 ### Plugin
 
 To add the plugin to your Re.Pack configuration, update your `rspack.config.js` or `webpack.config.js` as follows:
@@ -77,10 +61,7 @@ export default (env) => {
 - **Styles not applying?**
 
   Ensure your CSS import is present and the plugin is added to your config.
-
-- **PostCSS errors?**
-
-  Double-check that all required dependencies are installed and your `postcss.config.js` is set up.
+  Make sure you have the `nativewind/babel` preset applied in your babel config.
 
 - **TypeScript issues?**