remove refernce to the property that has been removed

Framework/PythonInterface/test/python/mantid/kernel/ConfigServiceTest.py

@@ -65,7 +65,7 @@ class ConfigServiceTest(unittest.TestCase):
         self.assertRaises(RuntimeError, config.getInstrument, "MadeUpInstrument")
 
     def test_service_acts_like_dictionary(self):
-        test_prop = "algorithms.retained"
+        test_prop = "projectRecovery.secondsBetween"
         self.assertTrue(config.hasProperty(test_prop))
         dictcall = config[test_prop]
         fncall = config.getString(test_prop)