Removed unused validateNavigationMenuItem() from PhabricatorProfileMenuEngine
Summary:
The commit rP7bde92b9c9806c5967df617fb4e843dea315ecf7 (2016) introduced private function validateNavigationMenuItem().
The only call to this method was removed in rP950e9d085b482bc3484e2066591ac07c20154c9a.
Thus remove this unused method.
Test Plan:
Read/grep the code in PhabricatorProfileMenuEngine.
Run also grep -RF 'validateNavigationMenuItem' --include="*.php" . to verify that this is an orphan method.
Reviewers: O1 Blessed Committers, valerio.bozzolan
Reviewed By: O1 Blessed Committers, valerio.bozzolan
Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno
Differential Revision: https://we.phorge.it/D25719