Bug fix for config restore from class method

Change-Id: I00d58f38a04a4b239fe4849f3598457062c9ab81
diff --git a/src/test/vsg/vsgTest.py b/src/test/vsg/vsgTest.py
index 67dd4e9..22120be 100644
--- a/src/test/vsg/vsgTest.py
+++ b/src/test/vsg/vsgTest.py
@@ -187,7 +187,7 @@
 
     @classmethod
     def tearDownClass(cls):
-        self.config_restore()
+        cls.config_restore()
         cls.vsgTeardown()
 
     def tearDown(self):