Revert of Implement basic USB device enumeration on Android.

device/usb/usb_configuration_android.h

-// 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.
-
-#ifndef DEVICE_USB_USB_CONFIGURATION_ANDROID_H_
-#define DEVICE_USB_USB_CONFIGURATION_ANDROID_H_
-
-#include "base/android/scoped_java_ref.h"
-#include "device/usb/usb_descriptors.h"
-
-namespace device {
-
-class UsbConfigurationAndroid {
- public:
-  // Register C++ methods exposed to Java using JNI.
-  static bool RegisterJNI(JNIEnv* env);
-
-  static UsbConfigDescriptor Convert(
-      JNIEnv* env,
-      const base::android::JavaRef<jobject>& usb_configuration);
-};
-
-}  // namespace device
-
-#endif  // DEVICE_USB_USB_CONFIGURATION_ANDROID_H_