fix

Signed-off-by: yuluo-yx <yuluo08290126@gmail.com>

spring-cloud-alibaba-starters/spring-cloud-starter-stream-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/properties/RocketMQBinderConfigurationProperties.java

@@ -26,5 +26,4 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
 @ConfigurationProperties(prefix = "spring.cloud.stream.rocketmq.binder")
 public class RocketMQBinderConfigurationProperties extends RocketMQCommonProperties {
 
-	public static final String PREFIX = "spring.cloud.stream.rocketmq.binder";
 }