Temporary remove link in GSC

Hello, I wanted to share some thoughts. Someone installed an e-commerce plugin demo store with 30something pages selling stuff completely unrelated to what the site is about, pages that Google indexed right away. The demo store has been removed but the pages are still indexed - 404 pages. I'm using the temporary remove link from index tool in Google Search Console.
Do I miss anything? Any suggestions/recommendations?
Thank you in advance.