Remove older changelog entries from readme.txt

Author: eason9487

readme.txt

@@ -59,20 +59,4 @@ Duplicate Google Analytics code causes a conflict in tracking. Remove any other
 * Fix - Add safe script tag encoding flags to all `wp_json_encode()` calls in inline scripts.
 * Update - Require WooCommerce 10.2+.
 
-= 2.1.18 - 2025-10-01 =
-* Tweak - Don't throw errors when the product ID is not found for legacy Ajax add-to-cart.
-* Tweak - WC 10.2 compatibility.
-* Update - Require WooCommerce 10.1+.
-
-= 2.1.17 - 2025-08-12 =
-* Dev - Updated vulnerable dependencies.
-* Tweak - WC 10.1 compatibility.
-* Update - Require WooCommerce 10.0+.
-* Update - Require WordPress 6.7+.
-
-= 2.1.16 - 2025-07-01 =
-* Tweak - WC 10.0 compatibility.
-* Update - Require WooCommerce 9.5+.
-* Update - Require WordPress 6.6+.
-
 [See changelog for all versions](https://raw.githubusercontent.com/woocommerce/woocommerce-google-analytics-integration/trunk/changelog.txt).