Remove GYP files.

third_party/openh264/openh264_args.gypi

Index: third_party/openh264/openh264_args.gypi
diff --git a/third_party/openh264/openh264_args.gypi b/third_party/openh264/openh264_args.gypi
deleted file mode 100644
index 676bce51578db8668a7c0a188bb57895d70c4a4b..0000000000000000000000000000000000000000
--- a/third_party/openh264/openh264_args.gypi
+++ /dev/null
@@ -1,12 +0,0 @@
-# Copyright 2015 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.
-
-{
-  'variables': {
-    # Enable this to build OpenH264 (for encoding, not decoding).
-    # CHECK THE OPENH264 LICENSE/PATENT BEFORE BUILDING, see
-    # http://www.openh264.org/.
-    'use_openh264%': 0,
-  },
-}