even more irrelevant changes

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

Author: varun-edachali-dbx

src/databricks/sql/result_set.py

@@ -259,7 +259,7 @@ def _convert_arrow_table(self, table):
         res = df.to_numpy(na_value=None, dtype="object")
         return [ResultRow(*v) for v in res]
 
-    def merge_columnar(self, result1, result2):
+    def merge_columnar(self, result1, result2) -> "ColumnTable":
         """
         Function to merge / combining the columnar results into a single result
         :param result1:

tests/unit/test_session.py

@@ -2,11 +2,6 @@
 from unittest.mock import patch, Mock
 import gc
 
-from databricks.sql.thrift_api.TCLIService.ttypes import (
-    TOpenSessionResp,
-    TSessionHandle,
-    THandleIdentifier,
-)
 from databricks.sql.backend.types import SessionId, BackendType
 
 import databricks.sql