Update test_json.py

Somewhere along the line, pandas-dev#39098 was fixed.  Remove the XFAIL mark so we can celebrate one more success!

Signed-off-by: Michael Tiemann <[email protected]>

pandas/tests/extension/json/test_json.py

@@ -356,7 +356,7 @@ def test_groupby_extension_no_sort(self):
         """
         super().test_groupby_extension_no_sort()
 
-    @pytest.mark.xfail(reason="GH#39098: Converts agg result to object")
+    # GH#39098 is now fixed, so we don't need to XFAIL
     def test_groupby_agg_extension(self, data_for_grouping):
         super().test_groupby_agg_extension(data_for_grouping)