1.To check which Git credentials are configured in your system, you can use the following command in the terminal:

```bash
git config --list
```

2. To permanently remove the user.email and user.name settings from your Git configuration, you can use the following commands in the terminal:

```bash
git config --global --unset user.email
git config --global --unset user.name
```

3. Then run the git config --list command to check your Git configuration, the output will not include the user.email and user.name settings.