feat(message): 移除ZT消息生产者示例代码- 删除ZtMessageProducerExample类及相关依赖

- 移除示例消息发送逻辑
- 清理无用的HashMap和日志记录代码
- 移除条件注解@ConditionalOnProperty配置
- 删除消息构建及发送示例实现

src/main/java/com/ycwl/basic/integration/message/example/ZtMessageProducerExample.java

@@ -1,33 +0,0 @@
-package com.ycwl.basic.integration.message.example;
-
-import com.ycwl.basic.integration.message.dto.ZtMessage;
-import com.ycwl.basic.integration.message.service.ZtMessageProducerService;
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
-import org.springframework.stereotype.Component;
-
-import java.util.HashMap;
-
-@Slf4j
-@Component
-@RequiredArgsConstructor
-@ConditionalOnProperty(name = "kafka.example.zt-message.enabled", havingValue = "true", matchIfMissing = false)
-public class ZtMessageProducerExample {
-
-    private final ZtMessageProducerService producer;
-
-    public void demo() {
-        log.info("=== ZT-Message Producer Example ===");
-
-        ZtMessage msg = ZtMessage.of("dummy", "标题", "内容", "user-001");
-        var extra = new HashMap<String, Object>();
-        extra.put("k", "v");
-        msg.setExtra(extra);
-        msg.setSendReason("REGISTER");
-        msg.setSendBiz("USER");
-
-        producer.send(msg);
-        log.info("ZT-Message produced");
-    }
-}