modify apiResult objectMapper

Author: todd5167

core/src/main/java/com/dtstack/flink/sql/exec/ApiResult.java

@@ -1,11 +1,9 @@
 package com.dtstack.flink.sql.exec;
 
-import org.codehaus.jackson.map.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.UUID;
-
 /**
  *  API调用结果返回
  * Date: 2020/2/24