Remove dust from page construction

Summary:
  ^\s+(['"])dust\1\s*=>\s*true,?\s*$\n

Test Plan: Looked through the diff.

Reviewers: chad

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D6769

src/applications/diffusion/controller/DiffusionCommitController.php

@@ -361,7 +361,6 @@ final class DiffusionCommitController extends DiffusionController {
       array(
         'title' => $commit_id,
         'pageObjects' => array($commit->getPHID()),
-        'dust' => true,
       ));
   }