diff --git a/src/applications/files/storage/PhabricatorFileTransactionComment.php b/src/applications/files/storage/PhabricatorFileTransactionComment.php
--- a/src/applications/files/storage/PhabricatorFileTransactionComment.php
+++ b/src/applications/files/storage/PhabricatorFileTransactionComment.php
@@ -7,20 +7,4 @@
     return new PhabricatorFileTransaction();
   }
 
-  public function shouldUseMarkupCache($field) {
-    // Only cache submitted comments.
-    return ($this->getTransactionPHID() != null);
-  }
-
-  protected function getConfiguration() {
-    $config = parent::getConfiguration();
-    $config[self::CONFIG_KEY_SCHEMA] = array(
-      'key_draft' => array(
-        'columns' => array('authorPHID', 'transactionPHID'),
-        'unique' => true,
-      ),
-    ) + $config[self::CONFIG_KEY_SCHEMA];
-    return $config;
-  }
-
 }