update readme

README.md

@@ -66,8 +66,6 @@ logger_options = { bodies: true }
 client = WhatsappSdk::Api::Client.new("<ACCESS TOKEN>", "<API VERSION>", logger, logger_options)
 ```
 
-Each API operation returns a `WhatsappSdk::Api::Response` that contains `data` and `error` and a couple of helpful functions such as `ok?` and `error?`. There are three types of responses `WhatsappSdk::Api::MessageDataResponse`, `WhatsappSdk::Api::PhoneNumberDataResponse` and `WhatsappSdk::Api::PhoneNumbersDataResponse`. Each of them contains different attributes.
-
 ## Set up a Meta app
 
 <details><summary>1) Create a Meta Business app </summary>