remove irrelevant code

core/src/datayoga_core/blocks/relational/write/block.py

@@ -185,22 +185,7 @@ def generate_upsert_stmt(self) -> Any:
                 ", ".join([f'target."{column}" = {sa.bindparam(column)}' for column in self.mapping_columns])
             ))
 
-        if self.db_type == relational_utils.DbType.DB2:
-            return sa.sql.text("""
-                MERGE INTO %s AS target
-                USING (VALUES (%s)) AS source (%s)
-                ON (%s)
-                WHEN NOT MATCHED THEN INSERT (%s) VALUES (%s)
-                WHEN MATCHED THEN UPDATE SET %s
-                """ % (
-                relational_utils.construct_table_reference(self.tbl),
-                ", ".join([f"{sa.bindparam(column)}" for column in self.business_key_columns]),
-                ", ".join([f"{column}" for column in self.business_key_columns]),
-                " AND ".join([f'target."{column}" = source."{column}"' for column in self.business_key_columns]),
-                ", ".join([f'"{column}"' for column in self.columns]),
-                ", ".join([f"{sa.bindparam(column)}" for column in self.columns]),
-                ", ".join([f'target."{column}" = {sa.bindparam(column)}' for column in self.mapping_columns])
-            ))
+
 
     def execute(self, statement: Any, records: List[Dict[str, Any]]):
         try: