[DataGrid][docs] Remove Bundling section from quickstart (mui#21177)

Co-authored-by: Claude Haiku 4.5 <[email protected]>

Author: MBilalShafi

docs/data/data-grid/quickstart/quickstart.md

@@ -127,104 +127,6 @@ const theme = createTheme({
 });
 ```
 
-## Bundling
-
-The Data Grid requires a bundler that can handle CSS imports.
-If you're using a setup that doesn't support CSS imports out of the box, follow the instructions below for your specific environment.
-
-### webpack
-
-Update your config to add the `style-loader` and `css-loader`.
-
-```ts title="webpack.config.js"
-export default {
-  // other webpack config
-  module: {
-    rules: [
-      {
-        test: /\.css$/i,
-        use: ['style-loader', 'css-loader'],
-      },
-    ],
-  },
-};
-```
-
-### Vite
-
-CSS imports should work with no additional configuration when using Vite.
-
-### Vitest
-
-Add the Data Grid packages to `test.deps.inline`.
-
-```ts title="vitest.config.ts"
-export default defineConfig({
-  test: {
-    deps: {
-      inline: [
-        '@mui/x-data-grid',
-        '@mui/x-data-grid-pro',
-        '@mui/x-data-grid-premium',
-      ],
-    },
-  },
-});
-```
-
-### Next.js
-
-If you're using the App Router, CSS imports should work out of the box.
-
-If you're using the Pages Router, you need to add the Data Grid packages to [`transpilePackages`](https://nextjs.org/docs/app/api-reference/config/next-config-js/transpilePackages).
-
-```ts title="next.config.ts"
-export default {
-  transpilePackages: [
-    '@mui/x-data-grid',
-    '@mui/x-data-grid-pro',
-    '@mui/x-data-grid-premium',
-  ],
-};
-```
-
-### Node.js
-
-If you're importing the packages inside Node.js, you can make CSS imports a no-op like this:
-
-**Using `require()`**:
-
-```js
-require.extensions['.css'] = () => null;
-```
-
-**Using `import`**:
-
-```js title="node-ignore-css.js"
-// node-ignore-css.js
-// Needs to be loaded before your code runs:
-//   node --import ./node-ignore-css.js ./index.js
-import { registerHooks } from 'node:module';
-registerHooks({
-  load(url, context, nextLoad) {
-    if (url.endsWith('.css')) {
-      return { url, format: 'module', source: '', shortCircuit: true };
-    }
-    return nextLoad(url, context);
-  },
-});
-```
-
-### Jest
-
-If you're using Jest, add the [`identity-obj-proxy`](https://www.npmjs.com/package/identity-obj-proxy) package to mock CSS imports.
-
-```ts title="jest.config.js"
-moduleNameMapper: {
-  '\\.(css|less|scss|sass)$': 'identity-obj-proxy'',
-},
-```
-
 ## API
 
 - [DataGrid](/x/api/data-grid/data-grid/)