Remove deprecated option from documentation

Author: acogoluegnes

src/docs/asciidoc/api.adoc

@@ -462,10 +462,6 @@ blocking when the limit is reached.
 |Period to send a batch of messages.
 |100 ms
 
-|`dynamicBatch`
-|Adapt batch size depending on ingress rate.
-|true
-
 |`confirmTimeout`
 |[[producer-confirm-timeout-configuration-entry]]Time before the client calls the confirm callback to signal
 outstanding unconfirmed messages timed out.