Remove all .gyp and .gypi files.

build/android/pylib/remote/device/dummy/dummy.gyp

-# 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.
-
-# Running gtests on a remote device via am instrument requires both an "app"
-# APK and a "test" APK with different package names. Our gtests only use one
-# APK, so we build a dummy APK to upload as the app.
-
-{
-  'targets': [
-    {
-      # GN: //build/android/pylib/remote/device/dummy:remote_device_dummy_apk
-      'target_name': 'remote_device_dummy_apk',
-      'type': 'none',
-      'variables': {
-        'apk_name': 'remote_device_dummy',
-        'java_in_dir': '.',
-        'android_manifest_path': '../../../../../../build/android/AndroidManifest.xml',
-      },
-      'includes': [
-        '../../../../../../build/java_apk.gypi',
-      ]
-    },
-  ]
-}