GH-1441: Remove unused code

See #1441

Author: garyrussell

spring-kafka/src/main/java/org/springframework/kafka/core/DefaultKafkaProducerFactory.java

@@ -735,9 +735,7 @@ public void close(@Nullable Duration timeout) {
 							if (!this.cache.contains(this)
 									&& !this.cache.offer(this)) {
 								this.closed = true;
-								this.delegate.close(this.producerFailed instanceof TimeoutException
-										? CLOSE_TIMEOUT_AFTER_TX_TIMEOUT
-										: timeout);
+								this.delegate.close(timeout);
 							}
 						}
 					}