remove untrue claim about device tracking (#7898)

Author: sobolk

src/fragments/lib/auth/common/device_features/common.mdx

@@ -15,7 +15,6 @@ The [device tracking and remembering](https://aws.amazon.com/blogs/mobile/tracki
 **Note:** The [device tracking and remembering](https://aws.amazon.com/blogs/mobile/tracking-and-remembering-devices-using-amazon-cognito-your-user-pools/) features are not available if any of the following conditions are met:
 
 - the federated OAuth flow with Cognito User Pools or Hosted UI is used, or
-- the User Pool uses `email/phone_number` or `alias` sign-in method, or
 - when the `signIn` API uses the `USER_PASSWORD_AUTH` as the `authFlowType`.
 
 </Callout>

src/pages/[platform]/build-a-backend/auth/concepts/multi-factor-authentication/index.mdx

@@ -890,7 +890,6 @@ Remembering a device is useful in conjunction with MFA because it allows the sec
 **Note:** The [device tracking and remembering](https://aws.amazon.com/blogs/mobile/tracking-and-remembering-devices-using-amazon-cognito-your-user-pools/) features are not available if any of the following conditions are met:
 
 - the federated OAuth flow with Cognito User Pools or Hosted UI is used, or
-- the User Pool uses `email`, `phone_number`, or alias attributes as sign-in methods
 - when the `signIn` API uses the `USER_PASSWORD_AUTH` as the `authFlowType`.
 
 </Callout>

src/pages/gen1/[platform]/build-a-backend/auth/manage-mfa/index.mdx

@@ -755,7 +755,6 @@ Remembering a device is useful in conjunction with MFA because it allows the sec
 **Note:** The [device tracking and remembering](https://aws.amazon.com/blogs/mobile/tracking-and-remembering-devices-using-amazon-cognito-your-user-pools/) features are not available if any of the following conditions are met:
 
 - the federated OAuth flow with Cognito User Pools or Hosted UI is used, or
-- the User Pool uses `email/phone_number` or `alias` sign-in method, or
 - when the `signIn` API uses the `USER_PASSWORD_AUTH` as the `authFlowType`.
 
 </Callout>