Remove active the latest trunk part from the testing instructions

Co-authored-by: Thomas Roberts <[email protected]>

Author: Tarun Vijwani

docs/internal-developers/testing/releases/990.md

@@ -269,7 +269,6 @@ Before | After | After (with custom background color)
 
 - Activate WP 6.2 RC using the WordPress Beta Tester plugin
 - Install [WooCommerce 7.4.1](https://href.li/?https://github.com/woocommerce/woocommerce/releases/tag/7.4.1)
-- Activate the latest trunk of WooCommerce blocks.
 - Activate any FSE theme.
 - Go to Appearance -> Editor
 - Add Cart block to the template.