fix build

apps/explorer/lib/explorer/chain/events/db_sender.ex

@@ -9,8 +9,6 @@ defmodule Explorer.Chain.Events.DBSender do
     send_notify(payload)
   end
 
-  def send_data(_event_type, :catchup, _event_data), do: :ok
-
   def send_data(event_type, broadcast_type, event_data) do
     payload = encode_payload({:chain_event, event_type, broadcast_type, event_data})
     send_notify(payload)

apps/explorer/lib/explorer/chain/events/simple_sender.ex

@@ -11,8 +11,6 @@ defmodule Explorer.Chain.Events.SimpleSender do
     end)
   end
 
-  def send_data(_event_type, :catchup, _event_data), do: :ok
-
   def send_data(event_type) do
     Registry.dispatch(Registry.ChainEvents, event_type, fn entries ->
       for {pid, _registered_val} <- entries do