Fix linting

Author: nicoddemus

testing/python/fixtures.py

@@ -3965,12 +3965,12 @@ def argroot(request):
         @pytest.fixture
         def arg(argroot):
             return argroot
-            
+
         # This should only be parametrized directly
         @pytest.mark.parametrize("arg", [1])
         def test_direct(arg):
             assert arg == 1
-            
+
         # This should be parametrized based on the fixtures
         def test_indirect(arg):
             assert isinstance(arg, str)