remove v3 from README

README.md

@@ -11,26 +11,6 @@
 # Documentation
 Documentation for usage can be found [here][docs], including the [getting started][docs-getting-started] guide and [UI component][docs-ui] docs.
 
-# Checkout V3
-
-```swift
-Afterpay.presentCheckoutV3Modally(over:consumer:total:items:animated:configuration:requestHandler:completion:)
-```
-
-Checkout version 3 returns a unique single use card for you to use in your existing checkout flow.
-
-The configuration object may be set using `setV3Configuration`, or passed into the checkout call.
-
-## Configuration
-
-```swift
-Afterpay.fetchMerchantConfiguration(configuration:requestHandler:completion:)
-```
-
-As v3 removes the need for merchant integration with the Afterpay API, the `Configuration` — providing information about minimum and maximum order amounts — is now available through the SDK.
-
-The configuration object may be set using `setV3Configuration`, or passed into the checkout call.
-
 # Contributing
 
 Contributions are welcome! Please read our [contributing guidelines][contributing].