Don't force buttons to grey with PHUIInfoView

Summary: I'd like to use red buttons.

Test Plan: Set a button to red in InfoView, see red button.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D18352

src/view/phui/PHUIInfoView.php

@@ -95,7 +95,6 @@ final class PHUIInfoView extends AphrontTagView {
   }
 
   public function addButton(PHUIButtonView $button) {
-    $button->setColor(PHUIButtonView::GREY);
     $this->buttons[] = $button;
     return $this;
   }