Update RELEASE-NOTES.txt

Remove duplication from merge conflict

Author: iamgabrielma

RELEASE-NOTES.txt

@@ -4,7 +4,6 @@
 22.0
 -----
 - [*] Payments: Puerto Rico is now available in the list of countries that are supported by In-Person Payments, when using WooPayments [https://github.com/woocommerce/woocommerce-ios/pull/14972]
-- [*] Payments: Puerto Rico is now available in the list of countries that are supported by in-person payments [https://github.com/woocommerce/woocommerce-ios/pull/14972]
 - [*] Product Form: Fix crash related to picking photos [https://github.com/woocommerce/woocommerce-ios/pull/15275]
 
 21.9