Remove webrtc/tools

webrtc/tools/compare_videos.py

-#!/usr/bin/env python
-# Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
-#
-# Use of this source code is governed by a BSD-style license
-# that can be found in the LICENSE file in the root of the source
-# tree. An additional intellectual property rights grant can be found
-# in the file PATENTS.  All contributing project authors may
-# be found in the AUTHORS file in the root of the source tree.
-
-import os
-
-# This is just a forwarding script during the transition of renaming tools to
-# rtc_tools. To avoid breaking Chromium tests.
-
-SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
-RTC_TOOLS_DIR = os.path.abspath(os.path.join(SCRIPT_DIR, os.pardir,
-                                             'rtc_tools'))
-os.system(os.path.join(RTC_TOOLS_DIR, 'compare_videos.py'))