remove redundant COLUMN_DATA_MAPPING

Signed-off-by: varun-edachali-dbx <varun.edachali@databricks.com>

Author: varun-edachali-dbx

src/databricks/sql/backend/sea/result_set.py

@@ -24,15 +24,6 @@
 logger = logging.getLogger(__name__)
 
 
-# Column-to-column data mapping for metadata queries
-# Maps target column -> source column to get data from
-COLUMN_DATA_MAPPING = {
-    "DATA_TYPE": "TYPE_NAME",  # DATA_TYPE calculated from TYPE_NAME
-    "NULLABLE": "IS_NULLABLE",  # NULLABLE calculated from IS_NULLABLE
-    "BUFFER_LENGTH": "TYPE_NAME",  # BUFFER_LENGTH calculated from TYPE_NAME
-}
-
-
 class SeaResultSet(ResultSet):
     """ResultSet implementation for SEA backend."""