Revert of [Android] Add an out-of-app instrumentation driver APK.

testing/android/broker/BUILD.gn

Index: testing/android/broker/BUILD.gn
diff --git a/testing/android/broker/BUILD.gn b/testing/android/broker/BUILD.gn
deleted file mode 100644
index 8daa040832987bcfa031e5647af0336324e145a1..0000000000000000000000000000000000000000
--- a/testing/android/broker/BUILD.gn
+++ /dev/null
@@ -1,13 +0,0 @@
-# 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.
-
-import("//build/config/android/rules.gni")
-
-# GYP: //testing/android/on_device_instrumentation.gyp:broker_java
-android_library("broker_java") {
-  chromium_code = true
-
-  java_files =
-      [ "java/src/org/chromium/test/broker/OnDeviceInstrumentationBroker.java" ]
-}