This my flow deletion :

Linc-Ctrl-RemoveFlows

RemoveFlows = #ofp_message{
                                version = 3,
                                xid = 200,
                                body = #ofp_flow_mod{
                                          cookie = <<0:64>>,
                                          cookie_mask = <<0:64>>,
                                          table_id = 1,
                                          command = delete,
                                          idle_timeout = 30000,
                                          hard_timeout = 60000,
                                          priority = 1,
                                          buffer_id = 1,
                                          out_port = 3,
                                          out_group = 5,
                                          flags = [],
                                          match = #ofp_match{fields = []},
                                          instructions = []}}.