GH-3147 Remove 'consumerPriority' from KafkaConsumerProperties

Resolves #3147

Author: olegz

binders/kafka-binder/spring-cloud-stream-binder-kafka-core/src/main/java/org/springframework/cloud/stream/binder/kafka/properties/KafkaConsumerProperties.java

@@ -210,15 +210,7 @@ public enum StandardHeaders {
 	 */
 	private boolean reactiveAtMostOnce;
 
-	/**
-	 * Consumer priority level. NOTE: Kafka does not natively support consumer priority.
-	 * This property is provided for consistency across binders but has no effect in Kafka.
-	 * For even message distribution across servers, use partition assignment strategies
-	 * or create separate bindings with concurrency=1.
-	 * Default: -1 (not supported)
-	 * @since 4.2
-	 */
-	private int consumerPriority = -1;
+
 
 	/**
 	 * @return Container's ack mode.
@@ -496,12 +488,4 @@ public void setReactiveAtMostOnce(boolean reactiveAtMostOnce) {
 		this.reactiveAtMostOnce = reactiveAtMostOnce;
 	}
 
-	public int getConsumerPriority() {
-		return this.consumerPriority;
-	}
-
-	public void setConsumerPriority(int consumerPriority) {
-		this.consumerPriority = consumerPriority;
-	}
-
 }