Remove all .gyp and .gypi files.

build/linux/unbundle/libevent.gyp

Index: build/linux/unbundle/libevent.gyp
diff --git a/build/linux/unbundle/libevent.gyp b/build/linux/unbundle/libevent.gyp
deleted file mode 100644
index 99d743533f6104c78d5106fa445f642f5eda2514..0000000000000000000000000000000000000000
--- a/build/linux/unbundle/libevent.gyp
+++ /dev/null
@@ -1,27 +0,0 @@
-# Copyright 2013 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.
-
-{
-  'targets': [
-    {
-      'target_name': 'libevent',
-      'type': 'none',
-      'toolsets': ['host', 'target'],
-      'variables': {
-        'headers_root_path': '.',
-        'header_filenames': [
-          'event.h',
-        ],
-      },
-      'includes': [
-        '../../build/shim_headers.gypi',
-      ],
-      'link_settings': {
-        'libraries': [
-          '-levent',
-        ],
-      },
-    }
-  ],
-}