code: def namedb_preorder_remove( cur, preorder_hash ):
      
      try:
          query, values = namedb_delete_prepare( cur, 'preorder_hash', preorder_hash, 'preorders' )
      except Exception, e:
          log.exception(e)
          log.error("FATAL: Failed to delete preorder with hash '%s'" % preorder_hash )
          os.abort()
  
      log.debug(namedb_format_query(query, values))
      namedb_query_execute( cur, query, values )
      return True
docs: Remove a preorder hash.
  
      DO NOT CALL THIS DIRECTLY.