diff --git a/deps/rabbitmq_shovel/src/rabbit_local_shovel.erl b/deps/rabbitmq_shovel/src/rabbit_local_shovel.erl
index e171ad575b..223e46cb89 100644
--- a/deps/rabbitmq_shovel/src/rabbit_local_shovel.erl
+++ b/deps/rabbitmq_shovel/src/rabbit_local_shovel.erl
@@ -598,10 +598,6 @@ settle(Op, DeliveryTag, Multiple,
 %%
 %% Returns a tuple of acknowledged pending acks and remaining pending acks.
 %% Sorts each group in the youngest-first order (descending by delivery tag).
-%% The special case for 0 comes from the AMQP 0-9-1 spec: if the multiple field is set to 1 (true),
-%% and the delivery tag is 0, this indicates acknowledgement of all outstanding messages (by a client).
-collect_acks(UAMQ, 0, true) ->
-    {lists:reverse(?QUEUE:to_list(UAMQ)), ?QUEUE:new()};
 collect_acks(UAMQ, DeliveryTag, Multiple) ->
     collect_acks([], [], UAMQ, DeliveryTag, Multiple).