Hello,
1) I have visited the URL you provided. To remove the shipping & delivery tab you need to Go to Theme Settings >> Product Page >> Tabs >> Additional tabs.
Clear the data in the additional tab heading and content.
Screenshot for Clarification: https://ibb.co/R42yfFg
You can also populate the area with your own HTML Block by mentioning the heading and shortcode of the HTML Block inside the content area.
2) To disable reviews you need to Go to WooCommerce >> Settings >> Products >> Disable Reviews from there.
Screenshot for Clarification: https://ibb.co/zNLG014
Best Regards.