Remove UI warnings about policies being a janky mess

Summary: Ref T603. While policies aren't completely perfect, they are substantially functional to the best of my knowledge -- definitely in good enough shape that we want to hear about issues with them, now.

Test Plan: Edited a task, repository, and project.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7343

src/applications/diffusion/controller/DiffusionRepositoryEditPolicyController.php

@@ -71,11 +71,6 @@ final class DiffusionRepositoryEditPolicyController
 
     $form = id(new AphrontFormView())
       ->setUser($viewer)
-      ->appendRemarkupInstructions(
-        pht(
-          'NOTE: The "Visible To" control is not yet fully functional. It '.
-          'applies to some interfaces, but some interfaces will bypass this '.
-          'setting and act as though it were set to "all users" for now.'))
       ->appendChild(
         id(new AphrontFormPolicyControl())
           ->setUser($viewer)