remove example

Author: sarahxsanders

src/pages/learn/file-uploads.mdx

@@ -83,59 +83,3 @@ If your application truly requires file uploads through GraphQL, proceed with ca
 - Ensure that streams are always terminated when the request ends, whether or not they were consumed.
 - Apply strict request size limits and validate all fields.
 - Treat file names, types, and contents as untrusted data.
-
-## Example (not recommended for production)
-
-The example below demonstrates how uploads could be wired up using Express, `graphql-http`, and busboy. 
-It’s included only to illustrate the mechanics and is not production-ready.
-
-<Callout type="warning" emoji="⚠️">
-  We strongly discourage using this code in production.
-</Callout>
-
-```js
-import express from 'express';
-import busboy from 'busboy';
-import { createHandler } from 'graphql-http/lib/use/express';
-import { schema } from './schema.js';
-
-const app = express();
-
-app.post('/graphql', (req, res, next) => {
-  const contentType = req.headers['content-type'] || '';
-
-  if (contentType.startsWith('multipart/form-data')) {
-    const bb = busboy({ headers: req.headers });
-    let operations, map;
-    const files = {};
-
-    bb.on('field', (name, val) => {
-      if (name === 'operations') operations = JSON.parse(val);
-      else if (name === 'map') map = JSON.parse(val);
-    });
-
-    bb.on('file', (fieldname, file, { filename, mimeType }) => {
-      files[fieldname] = { file, filename, mimeType };
-    });
-
-    bb.on('close', () => {
-      for (const [key, paths] of Object.entries(map)) {
-        for (const path of paths) {
-          const keys = path.split('.');
-          let target = operations;
-          while (keys.length > 1) target = target[keys.shift()];
-          target[keys[0]] = files[key].file;
-        }
-      }
-      req.body = operations;
-      next();
-    });
-
-    req.pipe(bb);
-  } else {
-    next();
-  }
-}, createHandler({ schema }));
-
-app.listen(4000);
-```