Left-align dates on /differential.

Test Plan: Went to /differential.

Reviewers: epriestley, chad

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4415

Author: relrod

src/applications/differential/field/specification/DifferentialDateCreatedFieldSpecification.php

@@ -11,10 +11,6 @@ public function renderHeaderForRevisionList() {
     return 'Created';
   }
 
-  public function getColumnClassForRevisionList() {
-    return 'right';
-  }
-
   public function renderValueForRevisionList(DifferentialRevision $revision) {
     return phabricator_date($revision->getDateCreated(), $this->getUser());
   }

src/applications/differential/field/specification/DifferentialDateModifiedFieldSpecification.php

@@ -11,10 +11,6 @@ public function renderHeaderForRevisionList() {
     return 'Updated';
   }
 
-  public function getColumnClassForRevisionList() {
-    return 'right';
-  }
-
   public function renderValueForRevisionList(DifferentialRevision $revision) {
     return phabricator_datetime($revision->getDateModified(), $this->getUser());
   }