Remove left-over tagging for waiting ack counter

Signed-off-by: David Schwilk <david.schwilk@bosch.io>

connectivity/service/src/main/java/org/eclipse/ditto/connectivity/service/messaging/BaseConsumerActor.java

@@ -194,7 +194,7 @@ private void prepareResponseHandler(final AcknowledgeableMessage acknowledgeable
                 if (dittoRuntimeException != null) {
                     if (isConsideredSuccess(dittoRuntimeException)) {
                         ackTimer.tag(TracingTags.ACK_SUCCESS, true).stop();
-                        ackCounter.tag(TracingTags.ACK_SUCCESS, true).decrement();
+                        ackCounter.decrement();
                         acknowledgeableMessage.settle();
                     } else {
                         final var shouldRedeliver = requiresRedelivery(dittoRuntimeException.getHttpStatus());