Add back limit parameter to Interbase and PostgreSQL _delete() due to CI_DB_active_record being abstract
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index b85049d..14259be 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -517,9 +517,10 @@
 	 * @param	string	the table name
 	 * @param	array	the where clause
 	 * @param	array	the like clause
+	 * @param	string	the limit clause (ignored)
 	 * @return	string
 	 */
-	protected function _delete($table, $where = array(), $like = array())
+	protected function _delete($table, $where = array(), $like = array(), $limit = FALSE)
 	{
 		$conditions = array();