Update manual-setup.mdx (#8333)

Remove unused imports for entry.server.ts code

Author: marcelkooi

src/platforms/javascript/guides/remix/manual-setup.mdx

@@ -67,9 +67,7 @@ Sentry.init({
 ```
 
 ```typescript {tabTitle:Server} {filename: entry.server.tsx}
-import { useLocation, useMatches } from "@remix-run/react";
 import * as Sentry from "@sentry/remix";
-import { useEffect } from "react";
 
 Sentry.init({
   dsn: "___PUBLIC_DSN___",