remove dependencies on `amplify remove auth`, support re-creating auth flow

>**Note**: If your question is regarding the AWS Amplify Console service, please log in the
[AWS Amplify Console repository](https://github.com/aws-amplify/amplify-console/issues)
My current auth support only signs in with email. I wish to sign in with SMS and by email.
To do that, I understand that I need to recreate the auth flow. However, I'm unable to remove the auth because of dependencies.

Would love to understand what should I do. Thanks!

**Which Category is your question related to?**
Auth

**Amplify CLI Version**

You can use `amplify -v` to check the amplify CLI version on your system
5.1.1

**What AWS Services are you utilizing?**
Auth

**Provide additional details e.g. code snippets**