[Android] Remove //tools/android/forwarder.

tools/android/forwarder/BUILD.gn

Index: tools/android/forwarder/BUILD.gn
diff --git a/tools/android/forwarder/BUILD.gn b/tools/android/forwarder/BUILD.gn
deleted file mode 100644
index 548af391f01c0bdadc9dbb882170361fbb3146e2..0000000000000000000000000000000000000000
--- a/tools/android/forwarder/BUILD.gn
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright 2016 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/symlink.gni")
-
-executable("forwarder") {
-  sources = [
-    "forwarder.cc",
-  ]
-  deps = [
-    "//base",
-    "//build/config/sanitizers:deps",
-    "//tools/android/common",
-  ]
-}