Remove GYP files.

third_party/libjingle/libjingle_common.gypi

Index: third_party/libjingle/libjingle_common.gypi
diff --git a/third_party/libjingle/libjingle_common.gypi b/third_party/libjingle/libjingle_common.gypi
deleted file mode 100644
index 62766fe94c3786435778545eb4fa7740f39523a9..0000000000000000000000000000000000000000
--- a/third_party/libjingle/libjingle_common.gypi
+++ /dev/null
@@ -1,17 +0,0 @@
-# Copyright 2014 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.
-
-{
-  'sources': [
-    '../webrtc_overrides/field_trial.cc',
-  ],
-  'conditions': [
-    ['OS=="win"', {
-      'msvs_disabled_warnings': [
-        4005,  # WIN32_LEAN_AND_MEAN.
-        4267,  # size_t to int truncations.
-      ],
-    }],
-  ],
-}