Remove all references to GYP

webrtc/modules/bitrate_controller/bitrate_controller.gypi

-# Copyright (c) 2012 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.
-
-{
-  'targets': [
-    {
-      'target_name': 'bitrate_controller',
-      'type': 'static_library',
-      'dependencies': [
-        '<(webrtc_root)/system_wrappers/system_wrappers.gyp:system_wrappers',
-      ],
-      'sources': [
-        'bitrate_controller_impl.cc',
-        'bitrate_controller_impl.h',
-        'include/bitrate_controller.h',
-        'send_side_bandwidth_estimation.cc',
-        'send_side_bandwidth_estimation.h',
-      ],
-      'conditions': [
-        ['enable_bwe_test_logging==1', {
-          'defines': [ 'BWE_TEST_LOGGING_COMPILE_TIME_ENABLE=1' ],
-        }, {
-          'defines': [ 'BWE_TEST_LOGGING_COMPILE_TIME_ENABLE=0' ],
-        }],
-      ],
-      # TODO(jschuh): Bug 1348: fix size_t to int truncations.
-      'msvs_disabled_warnings': [ 4267, ],
-    },
-  ], # targets
-}