CRM-12647 - CRM_Utils_Migrate_Export - Cleanup

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* CRM-12647: Customization export/import crashes on "&"
  http://issues.civicrm.org/jira/browse/CRM-12647

CRM/Utils/Migrate/Export.php

@@ -310,9 +310,7 @@ AND    entity_id    IS NULL
   }
 
   function fetch($groupName, $daoName, $sql = NULL, $map = NULL, $add = NULL) {
-    require_once (str_replace('_', DIRECTORY_SEPARATOR, $daoName) . '.php');
-
-    eval("\$dao = new $daoName( );");
+    $dao = new $daoName();
     if ($sql) {
       $dao->query($sql);
     }