Remove all references to GYP

webrtc/modules/pacing/pacing.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': 'paced_sender',
-      'type': 'static_library',
-      'dependencies': [
-        '<(webrtc_root)/system_wrappers/system_wrappers.gyp:system_wrappers',
-        '<(webrtc_root)/modules/modules.gyp:bitrate_controller',
-        '<(webrtc_root)/modules/modules.gyp:rtp_rtcp',
-      ],
-      'sources': [
-        'alr_detector.cc',
-        'alr_detector.h',
-        'bitrate_prober.cc',
-        'bitrate_prober.h',
-        'paced_sender.cc',
-        'paced_sender.h',
-        'packet_router.cc',
-        'packet_router.h',
-      ],
-    },
-  ], # targets
-}