Remove Devise authenticate_user!
Remove Devise authenticate_user!

No need for authenticating user in controller.
Firstly, if you need devise authentication for tail, you can use
```
        authenticate :user do
            mount Tail::Engine => "/tail"
        end
```
Secondly, if your model is not named User, but anything else, like
Admin, there will be no method authenticate_user!, there will be only
authenticate_admin!. So it will throw an error.

k2m30/tail,k2m30/tail,k2m30/tail