[2254] cleanup and one extra test

src/lib/python/isc/config/config_data.py

@@ -25,8 +25,6 @@ import isc.config.module_spec
 import ast
 import copy
 
-import traceback
-
 class ConfigDataError(Exception): pass
 
 BIND10_CONFIG_DATA_VERSION = 2

src/lib/python/isc/config/tests/ccsession_test.py

@@ -997,6 +997,7 @@ class TestUIModuleCCSession(unittest.TestCase):
         self.assertRaises(isc.cc.data.DataNotFoundError, uccs.remove_value, 1, "a")
         self.assertRaises(isc.cc.data.DataNotFoundError, uccs.remove_value, "no_such_item", "a")
         self.assertRaises(isc.cc.data.DataNotFoundError, uccs.remove_value, "Spec2/item1", "a")
+        self.assertRaises(isc.cc.data.DataNotFoundError, uccs.remove_value, "Spec2", "")
 
         self.assertEqual({}, uccs._local_changes)
         uccs.add_value("Spec2/item5", "foo")
@@ -1020,6 +1021,7 @@ class TestUIModuleCCSession(unittest.TestCase):
         self.assertRaises(isc.cc.data.DataTypeError,
                           uccs.remove_value, "Spec2/item5", None)
 
+
     # Check that the difference between no default and default = null
     # is recognized
     def test_default_null(self):