test: Remove xfail from test_describe now that JSON index reconstruction is fixed

Author: dimitri-yatsenko

tests/integration/test_json.py

@@ -119,7 +119,6 @@ def test_insert_update(schema_json):
     assert not q
 
 
-@pytest.mark.xfail(reason="describe() has issues with index reconstruction - pre-existing bug")
 def test_describe(schema_json):
     rel = Team()
     context = inspect.currentframe().f_globals