Remove all_android.gyp.

build/all_android.gyp

Index: build/all_android.gyp
diff --git a/build/all_android.gyp b/build/all_android.gyp
deleted file mode 100644
index bf4e4d927d96376c851a2a85db5120a2908a045d..0000000000000000000000000000000000000000
--- a/build/all_android.gyp
+++ /dev/null
@@ -1,17 +0,0 @@
-# Copyright (c) 2012 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.
-
-# TODO(thakis): Remove this file after https://codereview.chromium.org/139743016
-# has been in the tree for a while.
-{
-  'targets': [
-    {
-      'target_name': 'temporary_android_dummy_target',
-      'dependencies': [
-        'all.gyp:*',
-      ],
-      'type': 'none',
-    },
-  ],
-}