chore: clean styles

tests/test_diagram.py

@@ -2,7 +2,7 @@ import os
 import shutil
 import unittest
 
-from diagrams import Cluster, Diagram, Node, Edge
+from diagrams import Cluster, Diagram, Edge, Node
 from diagrams import getcluster, getdiagram, setcluster, setdiagram
 
 
@@ -251,9 +251,7 @@ class EdgeTest(unittest.TestCase):
                 self.assertEqual(node << Edge(color="pink", label="3.4") >> node, node)
 
     def test_nodes_to_node_with_attributes_bothdirectional(self):
-        with Diagram(
-            name=os.path.join(self.name, "nodes_to_node_with_attributes_bothdirectional"), show=False
-        ) as diagram:
+        with Diagram(name=os.path.join(self.name, "nodes_to_node_with_attributes_bothdirectional"), show=False):
             with Cluster():
                 node1 = Node("node1")
                 nodes = [Node("node2"), Node("node3")]