Update changelog.txt

Author: martynmjones

readme.txt

@@ -119,9 +119,4 @@ Yes, you can run both at the same time, and we recommend it! In the US, advertis
 = 2.7.5 - 2024-06-26 =
 * Add - Add an query parameter `campaign=saved` to the dashboard URL after the campaign was created.
 
-= 2.7.4 - 2024-06-25 =
-* Add - Integration with the WP Consent API plugin.
-* Dev - Add E2E tests for WP Consent API integration.
-* Tweak - Add docs note about WP Consent API integration.
-
 [See changelog for all versions](https://raw.githubusercontent.com/woocommerce/google-listings-and-ads/trunk/changelog.txt).