Revert of Replace Chrome IPC with Mojo IPC for querying BatteryStatus service

device/battery/android/BUILD.gn

Index: device/battery/android/BUILD.gn
diff --git a/device/battery/android/BUILD.gn b/device/battery/android/BUILD.gn
deleted file mode 100644
index f88cfc0b3deee30d6e91850be43bee8cc5a8f7c6..0000000000000000000000000000000000000000
--- a/device/battery/android/BUILD.gn
+++ /dev/null
@@ -1,13 +0,0 @@
-# Copyright 2014 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.
-
-import("//build/config/android/config.gni")
-import("//build/config/android/rules.gni")
-
-generate_jni("battery_jni_headers") {
-  jni_package = "battery"
-  sources = [
-    "java/src/org/chromium/device/battery/BatteryStatusManager.java",
-  ]
-}