remove dead code

Author: ohmayr

packages/django-google-spanner/django_spanner/introspection.py

@@ -12,8 +12,6 @@
 from django.db.models import Index
 from google.cloud.spanner_v1 import TypeCode
 
-from django_spanner import USE_EMULATOR
-
 
 class DatabaseIntrospection(BaseDatabaseIntrospection):
     """A Spanner-specific version of Django introspection utilities."""

packages/django-google-spanner/tests/mockserver_tests/mock_server_test_base.py

@@ -18,7 +18,7 @@
 import google.cloud.spanner_v1.types.result_set as result_set
 import google.cloud.spanner_v1.types.type as spanner_type
 import grpc
-from django.db import connection, connections
+from django.db import connections
 from google.api_core.client_options import ClientOptions
 from google.auth.credentials import AnonymousCredentials
 from google.cloud.spanner_dbapi.parsed_statement import AutocommitDmlMode

packages/django-google-spanner/tests/unit/django_spanner/test_base.py

@@ -46,7 +46,7 @@ def __getattr__(self, name):
                 return mock.MagicMock()
 
         with mock.patch("django_spanner.base.spanner"):
-            self.db_wrapper.connection = mock_connection = DummyConnection()
+            self.db_wrapper.connection = DummyConnection()
             self.db_wrapper.init_connection_state()
 
     def test_create_cursor(self):

packages/django-google-spanner/tests/unit/django_spanner/test_introspection.py

@@ -11,7 +11,6 @@
 from google.cloud.spanner_dbapi.cursor import ColumnDetails
 from google.cloud.spanner_v1 import TypeCode
 
-from django_spanner import USING_DJANGO_3
 from django_spanner.introspection import DatabaseIntrospection
 from tests.unit.django_spanner.simple_test import SpannerSimpleTestClass