remove timed message example from rocketmq examples.

Because it is not supported by rocketmq community version now.

spring-cloud-alibaba-examples/rocketmq-example/readme-zh.md

@@ -561,30 +561,13 @@ public class RocketMQDelayConsumeApplication {
             headers.put(MessageConst.PROPERTY_KEYS, key);
             headers.put(MessageConst.PROPERTY_ORIGIN_MESSAGE_ID, i);
    			// 设置延时等级1~10
-            headers.put("DELAY", 2);
+            headers.put(MessageConst.PROPERTY_DELAY_TIME_LEVEL, 2);
             Message<SimpleMsg> msg = new GenericMessage(new SimpleMsg("Delay RocketMQ " + i), headers);
             streamBridge.send("producer-out-0", msg);
          }
       };
    }
 
-   @Bean
-   public ApplicationRunner producerSchedule() {
-      return args -> {
-         for (int i = 0; i < 100; i++) {
-            String key = "KEY" + i;
-            Map<String, Object> headers = new HashMap<>();
-            headers.put(MessageConst.PROPERTY_KEYS, key);
-            headers.put(MessageConst.PROPERTY_ORIGIN_MESSAGE_ID, i);
-            // 发送延时消息，需要设置延时时间，单位毫秒（ms），消息将在指定延时时间后投递，例如消息将在3秒后投递。
-            long delayTime = System.currentTimeMillis() + 3000;
-            headers.put(MessageConst.PROPERTY_CONSUME_START_TIMESTAMP, delayTime);
-            Message<SimpleMsg> msg = new GenericMessage(new SimpleMsg("Schedule RocketMQ " + i), headers);
-            streamBridge.send("producer-out-0", msg);
-         }
-      };
-   }
-
    @Bean
    public Consumer<Message<SimpleMsg>> consumer() {
       return msg -> {

spring-cloud-alibaba-examples/rocketmq-example/readme.md

@@ -555,30 +555,13 @@ public class RocketMQDelayConsumeApplication {
             headers.put(MessageConst.PROPERTY_KEYS, key);
             headers.put(MessageConst.PROPERTY_ORIGIN_MESSAGE_ID, i);
    			// Set the delay level 1~10
-            headers.put("DELAY", 2);
+			 headers.put(MessageConst.PROPERTY_DELAY_TIME_LEVEL, 2);
             Message<SimpleMsg> msg = new GenericMessage(new SimpleMsg("Delay RocketMQ " + i), headers);
             streamBridge.send("producer-out-0", msg);
          }
       };
    }
 
-   @Bean
-   public ApplicationRunner producerSchedule() {
-      return args -> {
-         for (int i = 0; i < 100; i++) {
-            String key = "KEY" + i;
-            Map<String, Object> headers = new HashMap<>();
-            headers.put(MessageConst.PROPERTY_KEYS, key);
-            headers.put(MessageConst.PROPERTY_ORIGIN_MESSAGE_ID, i);
-            // Sending scheduled message, you need to set the delay time in milliseconds (ms). The message will be delivered after the specified delay time, for example, the message will be delivered after 3 seconds.
-            long delayTime = System.currentTimeMillis() + 3000;
-            headers.put(MessageConst.PROPERTY_CONSUME_START_TIMESTAMP, delayTime);
-            Message<SimpleMsg> msg = new GenericMessage(new SimpleMsg("Schedule RocketMQ " + i), headers);
-            streamBridge.send("producer-out-0", msg);
-         }
-      };
-   }
-
    @Bean
    public Consumer<Message<SimpleMsg>> consumer() {
       return msg -> {

spring-cloud-alibaba-examples/rocketmq-example/rocketmq-delay-consume-example/src/main/java/com/alibaba/cloud/examples/delay/RocketMQDelayConsumeApplication.java

@@ -58,30 +58,13 @@ public class RocketMQDelayConsumeApplication {
 				Map<String, Object> headers = new HashMap<>();
 				headers.put(MessageConst.PROPERTY_KEYS, key);
 				headers.put(MessageConst.PROPERTY_ORIGIN_MESSAGE_ID, i);
-				headers.put("DELAY", 2);
+				headers.put(MessageConst.PROPERTY_DELAY_TIME_LEVEL, 2);
 				Message<SimpleMsg> msg = new GenericMessage(new SimpleMsg("Delay RocketMQ " + i), headers);
 				streamBridge.send("producer-out-0", msg);
 			}
 		};
 	}
 
-	@Bean
-	public ApplicationRunner producerSchedule() {
-		return args -> {
-			for (int i = 0; i < 100; i++) {
-				String key = "KEY" + i;
-				Map<String, Object> headers = new HashMap<>();
-				headers.put(MessageConst.PROPERTY_KEYS, key);
-				headers.put(MessageConst.PROPERTY_ORIGIN_MESSAGE_ID, i);
-				// send message after 3000ms
-				long delayTime = System.currentTimeMillis() + 3000;
-				headers.put(MessageConst.PROPERTY_CONSUME_START_TIMESTAMP, delayTime);
-				Message<SimpleMsg> msg = new GenericMessage(new SimpleMsg("Schedule RocketMQ " + i), headers);
-				streamBridge.send("producer-out-0", msg);
-			}
-		};
-	}
-
 	@Bean
 	public Consumer<Message<SimpleMsg>> consumer() {
 		return msg -> {