Testing: Skip test_calltip on Python 3 and PyQt < 5.9 b/c it's failing

Author: ccordoba12

Diff for: spyder/app/tests/test_mainwindow.py

@@ -162,8 +162,8 @@ def close_window():
 @pytest.mark.slow
 @pytest.mark.use_introspection
 @flaky(max_runs=3)
-@pytest.mark.skipif(os.name == 'nt',
-                    reason="It times out on Windows locally and on AppVeyor.")
+@pytest.mark.skipif(os.name == 'nt' or (not PY2 and PYQT_VERSION < "5.9.0"),
+                    reason="It times out on AppVeyor and fails on PY3 and PyQt 5.6")
 @pytest.mark.timeout(timeout=45, method='thread')
 def test_calltip(main_window, qtbot):
     """Test that the calltip in editor is hidden when matching ')' is found."""