Delete Sheet Columns
Deletes columns D and E (column index 3 to 4, zero-based) from the specified sheet tab using the delete_sheet_rows_columns endpoint.
Set Dimension='COLUMNS' and specify StartIndex and EndIndex for the range to delete.
SELECT * FROM delete_sheet_rows_columns
WITH(
Dimension='COLUMNS',
StartIndex='3',
EndIndex='5',
TabId='0',
SpreadSheetId='1az2H8ZYk7BvjddVTqPR-LfDjX9IRpIpjCDpFPe9EzkU'
)