Fix whitespace

Author: pablogsal

Lib/graphlib.py

@@ -243,4 +243,3 @@ def static_order(self):
             node_group = self.get_ready()
             yield from node_group
             self.done(*node_group)
-

Lib/test/test_graphlib.py

@@ -241,4 +241,4 @@ def check_order_with_hash_seed(seed):
 
         self.assertNotEqual(run1, "")
         self.assertNotEqual(run2, "")
-        self.assertEqual(run1, run2)
+        self.assertEqual(run1, run2)