Remove unused tests

Author: sakthivelmanii

django_spanner/creation.py

@@ -27,7 +27,10 @@ def mark_skips(self):
             # Importing a test app that isn't installed raises RuntimeError.
             if test_app in settings.INSTALLED_APPS:
                 test_case = import_string(test_case_name)
-                method = getattr(test_case, method_name)
+                try:
+                    method = getattr(test_case, method_name)
+                except AttributeError:
+                    continue
                 setattr(
                     test_case,
                     method_name,