Move unittest_data to internal/testing.

tools/telemetry/unittest_data/discoverable_classes/another_discover_dummyclass.py

-# Copyright 2013 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""More dummy exception subclasses used by core/discover.py's unit tests."""
-
-# Import class instead of module explicitly so that inspect.getmembers() returns
-# two Exception subclasses in this current file.
-# Suppress complaints about unable to import class.  The directory path is
-# added at runtime by telemetry test runner.
-#pylint: disable=F0401
-from unittest_data.discoverable_classes import discover_dummyclass
-
-
-class _PrivateDummyException(discover_dummyclass.DummyException):
-  def __init__(self):
-    super(_PrivateDummyException, self).__init__()
-
-
-class DummyExceptionImpl1(_PrivateDummyException):
-  def __init__(self):
-    super(DummyExceptionImpl1, self).__init__()
-
-
-class DummyExceptionImpl2(_PrivateDummyException):
-  def __init__(self):
-    super(DummyExceptionImpl2, self).__init__()
-
-
-class DummyExceptionWithParameterImpl1(_PrivateDummyException):
-  def __init__(self, parameter):
-    super(DummyExceptionWithParameterImpl1, self).__init__()
-    del parameter