fix(tests): ini writer columnType 留空（默认 STRING 即 raw 全字段契约）

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/integration/datax/hive_import/app_user_cert_info.ini

@@ -22,7 +22,7 @@ fetchSize = 1000
 dataSource = hdfs/prd-hdfs-ha
 path = /user/hive/warehouse/test.db/raw_usr_app_user_cert_info_inc_d/dt=${dt}/
 column = id,user_id,cert_birthday,cert_sex,cert_province,cert_city,version,status,del_flag,create_time,update_time
-columnType = id:STRING,user_id:STRING,cert_birthday:STRING,cert_sex:STRING,cert_province:STRING,cert_city:STRING,version:STRING,status:STRING,del_flag:STRING,create_time:STRING,update_time:STRING
+columnType =
 fileType = orc
 fileName = raw_usr_app_user_cert_info_inc_d
 encoding = UTF-8