Remove dtlsidentitystore.h from libjingle GYP/GN files.

third_party/libjingle/libjingle.gyp

 # Copyright (c) 2012 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.
 
 {
   'includes': [
     '../../build/win_precompile.gypi',
   ],
   # Most of these settings have been split according to their scope into
   # :jingle_unexported_configs and :jingle_public_config in the GN build.
@@ skipping 200 matching lines @@
       'targets': [
         {
           # GN version: //third_party/libjingle:libjingle_webrtc_common
           'target_name': 'libjingle_webrtc_common',
           'type': 'static_library',
           'sources': [
             '<(DEPTH)/third_party/webrtc/api/audiotrack.cc',
             '<(DEPTH)/third_party/webrtc/api/audiotrack.h',
             '<(DEPTH)/third_party/webrtc/api/datachannel.cc',
             '<(DEPTH)/third_party/webrtc/api/datachannel.h',
-            '<(DEPTH)/third_party/webrtc/api/dtlsidentitystore.h',
             '<(DEPTH)/third_party/webrtc/api/dtmfsender.cc',
             '<(DEPTH)/third_party/webrtc/api/dtmfsender.h',
             '<(DEPTH)/third_party/webrtc/api/jsep.h',
             '<(DEPTH)/third_party/webrtc/api/jsepicecandidate.cc',
             '<(DEPTH)/third_party/webrtc/api/jsepicecandidate.h',
             '<(DEPTH)/third_party/webrtc/api/jsepsessiondescription.cc',
             '<(DEPTH)/third_party/webrtc/api/jsepsessiondescription.h',
             '<(DEPTH)/third_party/webrtc/api/localaudiosource.cc',
             '<(DEPTH)/third_party/webrtc/api/localaudiosource.h',
             '<(DEPTH)/third_party/webrtc/api/mediaconstraintsinterface.cc',
@@ skipping 140 matching lines @@
           ],
           'dependencies': [
             '<(DEPTH)/third_party/webrtc/modules/modules.gyp:audio_processing',
             'libjingle_webrtc_common',
           ],
         },
       ],
     }],
   ],
 }