Remove "PHID Manager" Tool list interface

Summary: This was well-intentioned but has not actually proven to be useful.

Test Plan:
  - No list tab shows up anymore.
  - Looked up a PHID.

Reviewers: btrahan, jungejason, Girish

Reviewed By: Girish

CC: aran, jungejason, edward, emiraga, Girish, nh, tuomaspelkonen, epriestley

Maniphest Tasks: T631

Differential Revision: 1234

src/aphront/default/configuration/AphrontDefaultApplicationConfiguration.php

@@ -70,7 +70,6 @@ class AphrontDefaultApplicationConfiguration
       ),
       '/phid/' => array(
         '$' => 'PhabricatorPHIDLookupController',
-        'list/$' => 'PhabricatorPHIDListController',
       ),
       '/people/' => array(
         '$' => 'PhabricatorPeopleListController',