Revert "website/docs: Prepare for monorepo. (#14119)" (#14239)

This reverts commit 5bdef1c4f6.

website/remark/preview-directive.mjs

@@ -1,47 +0,0 @@
-/**
- * @file Remark plugin to transform `ak-preview` directives into preview badges.
- *
- * @import { Root } from "mdast";
- */
-import { h } from "hastscript";
-import { SKIP, visit } from "unist-util-visit";
-
-/**
- * MDAST plugin to transform `ak-preview` directives into preview badges.
- */
-function remarkPreviewDirective() {
-    /**
-     * @param {Root} tree The MDAST tree to transform.
-     */
-    return function (tree) {
-        visit(tree, "textDirective", function (node) {
-            if (node.name !== "ak-preview") return SKIP;
-
-            const data = node.data || (node.data = {});
-
-            const hast = h("span", {
-                ...node.attributes,
-                "className": "badge badge--preview",
-                "title": `This feature is in preview and may change in the future.`,
-                "aria-description": "Preview badge",
-                "role": "img",
-            });
-
-            data.hName = hast.tagName;
-            data.hProperties = hast.properties;
-
-            data.hChildren = [
-                {
-                    type: "text",
-                    value: "Preview",
-                },
-            ];
-
-            node.children = [];
-
-            return SKIP;
-        });
-    };
-}
-
-export default remarkPreviewDirective;