Delete info about last_login property
Delete info about last_login property

The doc is wrong. `last_login` is hidden from the `user` object in the rule
jeffreylees/docs,auth0/docs,auth0/docs,yvonnewilson/docs,auth0/docs,jeffreylees/docs,jeffreylees/docs,yvonnewilson/docs,yvonnewilson/docs