Remove experimental section

Author: albarin

docs/internal-developers/testing/releases/890.md

@@ -113,12 +113,3 @@ Zip file for testing: [woocommerce-gutenberg-products-block.zip](https://github.
 
 1. Add a “Filter Products by Attribute” block
 2. Notice that the text "Display a list of filters based on a chosen attribute" is NOT too close to the separator
-
-## Experimental
-
-### [Product Query] Fix filter block data counter ([7257](https://github.com/woocommerce/woocommerce-blocks/pull/7257))
-
-1. Add a Product Query and enable ´Show only products on sale´.
-2. Add the Filter Products by Price block and add the Filter Products by stock block.
-3. Save and on the frontend be sure that the max price is $55.00 and there isn't the option "out of stock".
-