Remove unused libudev on Linux.

webrtc/media/media.gyp

 # Copyright (c) 2016 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.
 
 {
   'includes': [ '../build/common.gypi', ],
@@ skipping 137 matching lines @@
             'defines': [
               'HAVE_WEBRTC_VIDEO',
               'HAVE_WEBRTC_VOICE',
             ],
           },
           'dependencies': [
             '<(webrtc_root)/modules/modules.gyp:video_capture_module_internal_impl',
             '<(webrtc_root)/modules/modules.gyp:video_render_module_internal_impl',
           ],
         }],
-        ['OS=="linux" and include_internal_device_management==1', {
-          'sources': [
-            'devices/libudevsymboltable.cc',
-            'devices/libudevsymboltable.h',
-            'devices/v4llookup.cc',
-            'devices/v4llookup.h',
-          ],
-          'include_dirs': [
-            'third_party/libudev'
-          ],
-          'libraries': [
-            '-lrt',
-          ],
-        }],
         ['OS=="linux" and use_gtk==1', {
           'sources': [
             'devices/gtkvideorenderer.cc',
             'devices/gtkvideorenderer.h',
           ],
           'cflags': [
             '<!@(pkg-config --cflags gobject-2.0 gthread-2.0 gtk+-2.0)',
           ],
         }],
         ['OS=="win"', {
@@ skipping 26 matching lines @@
         }],
         ['OS=="ios" or (OS=="mac" and target_arch!="ia32")', {
           'defines': [
             'CARBON_DEPRECATED=YES',
           ],
         }],
       ],
     },  # target rtc_media
   ],  # targets.
 }