diff --git a/apps/builder/app/routes/builder.$projectId.tsx b/apps/builder/app/routes/builder.$projectId.tsx
deleted file mode 100644
index a92dcf520f7f..000000000000
--- a/apps/builder/app/routes/builder.$projectId.tsx
+++ /dev/null
@@ -1,24 +0,0 @@
-import { type LoaderFunctionArgs } from "@remix-run/server-runtime";
-import { redirect } from "~/services/no-store-redirect";
-import { builderUrl } from "~/shared/router-utils";
-
-// Support for Auth Token URLs generated by previous Builder versions
-// @todo: Remove after 2024-12-31
-export const loader = async ({ request, params }: LoaderFunctionArgs) => {
-  if (params.projectId === undefined) {
-    throw new Response("projectId is required", {
-      status: 404,
-    });
-  }
-
-  const url = new URL(request.url);
-
-  return redirect(
-    builderUrl({
-      projectId: params.projectId,
-      origin: request.url,
-      authToken: url.searchParams.get("authToken") ?? undefined,
-      mode: url.searchParams.get("mode") === "preview" ? "preview" : "design",
-    })
-  );
-};