Kill phutil_render_tag()

Summary: Fixes some double escaping.

Test Plan: None.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T2432

Differential Revision: https://secure.phabricator.com/D4945

src/applications/phriction/controller/PhrictionDiffController.php

@@ -116,7 +116,7 @@ final class PhrictionDiffController
             'href' => '/phriction/history/'.$document->getSlug().'/',
           ),
           'History'),
-        phutil_escape_html("Changes Between Version {$l} and Version {$r}"),
+        "Changes Between Version {$l} and Version {$r}",
       ));
 
     $comparison_table = $this->renderComparisonTable(