Remove webrtc/libjingle/{xmllite,xmpp}

webrtc/build/gn_isolate_map.pyl

 # 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.
 
 # gn_isolate_map.pyl - A mapping of Ninja build target names to GN labels and
 # test type classifications for the tests that are run on the bots.
@@ skipping 77 matching lines @@
     "type": "console_test_launcher",
   },
   "voice_engine_unittests": {
     "label": "//webrtc/voice_engine:voice_engine_unittests",
     "type": "console_test_launcher",
   },
   "webrtc_nonparallel_tests": {
     "label": "//webrtc:webrtc_nonparallel_tests",
     "type": "non_parallel_console_test_launcher",
   },
-  "xmllite_xmpp_unittests": {
-    "label": "//webrtc/libjingle:xmllite_xmpp_unittests",
-    "type": "console_test_launcher",
-  }
 }