Revert " feat(remix-dev): add support for handle, links & `loader…

…` to mdx (#3763)"

This reverts commit b2ef490.

contributors.yml

@@ -394,4 +394,3 @@
 - zhe
 - garand
 - kiancross
-- tagraves

docs/guides/mdx.md

@@ -16,7 +16,7 @@ Remix supports using MDX in two ways:
 
 The simplest way to get started with MDX in Remix is to create a route module. Just like `.js` and `.ts` files in your `app/routes` directory, `.mdx` (and `.md`) files will participate in automatic file system based routing.
 
-MDX routes allow you to define `handle`, `headers`, `links`, and `meta` as if they were a code based route:
+MDX routes allow you to define both meta and headers as if they were a code based route:
 
 ```md
 ---
@@ -25,9 +25,6 @@ meta:
   description: Isn't this awesome?
 headers:
   Cache-Control: no-cache
-links: [{ rel: "stylesheet", href: "app.css" }]
-handle:
-  someData: "abc"
 ---
 
 # Hello Content!
@@ -50,8 +47,6 @@ import SomeComponent from "~/components/some-component";
 <SomeComponent {...attributes.componentData} />
 ```
 
-You can also access your frontmatter fields from a parent component via the `data` field in `useMatches`.
-
 ### Example
 
 By creating a `app/routes/posts/first-post.mdx` we can start writing a blog post:

packages/remix-dev/compiler/plugins/mdx.ts

@@ -71,9 +71,7 @@ export function mdxPlugin(config: RemixConfig): esbuild.Plugin {
 export const filename = ${JSON.stringify(path.basename(args.path))};
 export const headers = typeof attributes !== "undefined" && attributes.headers;
 export const meta = typeof attributes !== "undefined" && attributes.meta;
-export const handle = typeof attributes !== "undefined" && attributes.handle;
-export const links = typeof attributes === "undefined" ? undefined : () => attributes.links;
-export const loader = typeof attributes === "undefined" ? undefined : () => attributes;
+export const links = undefined;
           `;
 
           let compiled = await xdm.compile(fileContents, {