docs(guide:understanding_controllers): remove outdated info

Remove the outdated info in this document related to this API change
https://github.com/angular/angular.js/blob/master/src/ng/rootScope.js#L166

jamesBrennan committed 13y ago

99cd86a96ee2e076f96f5f5d26646b8f7b782a5e

Parent: d551d72

Committed by Pete Bacon Darwin <pete@bacondarwin.com> on 5/15/2013, 8:32:15 PM