Delete null_handler.py

common/lib/xmodule/xmodule/util/null_handler.py

@@ -1,11 +0,0 @@
-# pylint: disable=missing-docstring
-
-
-class NullHandler(object):
-    """
-    Responds to an any method call.
-    """
-    def __getattr__(self, name):
-        def method(*args, **kwargs):  # pylint: disable=unused-argument
-            pass
-        return method