Fix indentation and newlines according to flake8

tests/test_queue.py

@@ -355,7 +355,6 @@ class TestQueue(RQTestCase):
         # DeferredJobRegistry should also be empty
         self.assertEqual(registry.get_job_ids(), [])
 
-
     def test_enqueue_dependents_on_multiple_queues(self):
         """Enqueueing dependent jobs on multiple queues pushes jobs in the queues
         and removes them from DeferredJobRegistry for each different queue."""
@@ -392,8 +391,6 @@ class TestQueue(RQTestCase):
         self.assertEqual(registry_1.get_job_ids(), [])
         self.assertEqual(registry_2.get_job_ids(), [])
 
-
-
     def test_enqueue_job_with_dependency(self):
         """Jobs are enqueued only when their dependencies are finished."""
         # Job with unfinished dependency is not immediately enqueued