Hello,
1/ Vendor Information tab comes from the vendor plugin, it shows automatically. You can disable it by adding the next code in Theme options > Theme custom CSS:
.single-product .seller_tab {
display: none;
}
2/ Single Product Builder > Cross-sell products.
https://woocommerce.com/document/related-products-up-sells-and-cross-sells/
3/ More Products tab comes from the vendor plugin, it shows automatically.
You can disable it by adding the next code in Theme options > Theme custom CSS:
.single-product .more_seller_product_tab {
display: none;
}
Regards