Remove invalid testing notes

Author: mikejolley

docs/internal-developers/testing/releases/1150.md

@@ -157,14 +157,6 @@ _Perform these steps both in Firefox and Chrome/Brave/Edge._
 2. As a guest user, go to checkout. Autocomplete the shipping address section.
 3. Ensure that the state field selects massachusetts.
 
-### Improve 'hero product 3 split' pattern [#11414](https://github.com/woocommerce/woocommerce-blocks/pull/11414)
-
-1. Add a new post.
-2. Add the `Hero Product 3 split` pattern.
-3. Save
-4. Visit the post.
-5. Ensure that the pattern (desktop and mobile view) [matches the mockup](https://github.com/woocommerce/woocommerce-blocks/assets/4463174/e4ec46d3-6ba7-46d4-9f14-8cb51b2bb4f6)).
-
 ### Essential Header Dark pattern: Fix color contrast issues in TT4 [#11480](https://github.com/woocommerce/woocommerce-blocks/pull/11480)
 
 1. Activate the **Twenty Twenty-Four** theme.
@@ -258,7 +250,7 @@ add_action( 'woocommerce_before_calculate_totals', 'calc_price' );
 
 ## Testing notes for the development team
 
-### Use the <header> element for the checkout header [#11222](https://github.com/woocommerce/woocommerce-blocks/pull/11222)
+### Use the header element for the checkout header [#11222](https://github.com/woocommerce/woocommerce-blocks/pull/11222)
 
 1. Install and activate a blocks theme eg TT3/TT4
 2. Go to `Appearance` > `Editor` > `Templates` > `Manage All Templates` > `Page: Checkout` ensure none has customizations (or delete them if so), and enter edition mode