Remove autocomplete attribute from hidden field (#6573)

Author: rhcarvalho

priv/templates/phx.gen.auth/settings_live.ex

@@ -42,7 +42,6 @@ defmodule <%= inspect context.web_module %>.<%= inspect Module.concat(schema.web
           name={@password_form[:email].name}
           type="hidden"
           id="hidden_<%= schema.singular %>_email"
-          autocomplete="username"
           value={@current_email}
         />
         <.input