去除redis的database选择。用于支持redis集群部署方式

src/main/java/com/gzzn/omms/msgexchangeapi/redis/RedisService.java

@@ -5,11 +5,10 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.redis.core.RedisTemplate;
-import org.springframework.stereotype.Component;
 import org.springframework.stereotype.Service;
-import org.springframework.util.CollectionUtils;
 
 
 /**