[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

django_fsm_log/backends.py

@@ -72,7 +72,6 @@ def pre_transition_callback(sender, instance, name, source, target, **kwargs):
 
     @staticmethod
     def post_transition_callback(sender, instance, name, source, target, **kwargs):
-
         klass = _get_concrete_model()
 
         klass.pending_objects.commit_for_object(instance)