Remove unused RealTimeTemporalLayers.

webrtc/modules/video_coding/BUILD.gn

 # Copyright (c) 2014 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("../../webrtc.gni")
 
@@ skipping 184 matching lines @@
     "../../system_wrappers",
   ]
 }
 
 rtc_static_library("webrtc_vp8") {
   sources = [
     "codecs/vp8/default_temporal_layers.cc",
     "codecs/vp8/default_temporal_layers.h",
     "codecs/vp8/include/vp8.h",
     "codecs/vp8/include/vp8_common_types.h",
-    "codecs/vp8/realtime_temporal_layers.cc",
     "codecs/vp8/reference_picture_selection.cc",
     "codecs/vp8/reference_picture_selection.h",
     "codecs/vp8/screenshare_layers.cc",
     "codecs/vp8/screenshare_layers.h",
     "codecs/vp8/simulcast_encoder_adapter.cc",
     "codecs/vp8/simulcast_encoder_adapter.h",
     "codecs/vp8/simulcast_rate_allocator.cc",
     "codecs/vp8/simulcast_rate_allocator.h",
     "codecs/vp8/temporal_layers.h",
     "codecs/vp8/vp8_impl.cc",
@@ skipping 341 matching lines @@
     }
 
     # TODO(jschuh): bugs.webrtc.org/1348: fix this warning.
     configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
   }
 }