Remove mojo/apps/js, it is unused

mojo/apps/js/test/BUILD.gn

Index: mojo/apps/js/test/BUILD.gn
diff --git a/mojo/apps/js/test/BUILD.gn b/mojo/apps/js/test/BUILD.gn
deleted file mode 100644
index 5cb5a482488ed1fde3f2372ae7161dcc2a53074e..0000000000000000000000000000000000000000
--- a/mojo/apps/js/test/BUILD.gn
+++ /dev/null
@@ -1,32 +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("//mojo/public/tools/bindings/mojom.gni")
-
-# GYP version: mojo/mojo_apps.gypi:mojo_apps_js_unittests
-test("mojo_apps_js_unittests") {
-  deps = [
-    ":js_to_cpp_bindings",
-    "//gin:gin_test",
-    "//mojo/apps/js:mojo_runner",
-    "//mojo/apps/js/bindings",
-    "//mojo/bindings/js",
-    "//mojo/common",
-    "//mojo/edk/test:run_all_unittests",
-    "//mojo/edk/test:test_support",
-    "//mojo/public/cpp/bindings",
-    "//mojo/public/cpp/system",
-    "//mojo/public/interfaces/bindings/tests:test_interfaces",
-  ]
-
-  sources = [
-    "handle_unittest.cc",
-    "js_to_cpp_unittest.cc",
-    "run_apps_js_tests.cc",
-  ]
-}
-
-mojom("js_to_cpp_bindings") {
-  sources = [ "js_to_cpp.mojom" ]
-}