Failed to load delete and inventory_delete table data

[wjxiz1992]

After #77, refresh data should be read as independent files, but our code to get delete and inventory_delete table data are still based on Iceberg, we need to change the code to deal with new read manner.

error messages:

Traceback (most recent call last):
  File "/usr/workspace/deploy/temp/spark-rapids-benchmarks/nds/nds_maintenance.py", line 207, in <module>
    query_dict = get_maintenance_queries(args.maintenance_queries_folder,
  File "/usr/workspace/deploy/temp/spark-rapids-benchmarks/nds/nds_maintenance.py", line 98, in get_maintenance_queries
    delete_date_dict = get_delete_date(spark)
  File "/usr/workspace/deploy/temp/spark-rapids-benchmarks/nds/nds_maintenance.py", line 65, in get_delete_date
    delete_dates = spark_session.sql("select * from delete").collect()
  File "/spark/python/lib/pyspark.zip/pyspark/sql/session.py", line 1034, in sql
  File "/spark/python/lib/py4j-0.10.9.5-src.zip/py4j/java_gateway.py", line 1321, in __call__
  File "/spark/python/lib/pyspark.zip/pyspark/sql/utils.py", line 196, in deco
pyspark.sql.utils.AnalysisException: Table or view not found: delete; line 1 pos 14;
'Project [*]
+- 'UnresolvedRelation [delete], [], false