Revert of Moving CRD Windows targets to subdirectories.

remoting/host/installer/BUILD.gn

-# 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("//remoting/build/config/remoting_build.gni")
-
-action("credits") {
-  # We put this in $root_build_dir/gen/remoting instead of
-  # $root_build_dir/gen/remoting/host (target_gen_dir) for
-  # compatibility w/ GYP, since the installer needs the file to
-  # be at the same location.
-  about_credits_file = "$root_build_dir/gen/remoting/CREDITS.txt"
-  script = "//tools/licenses.py"
-
-  inputs = [
-    "credits.tmpl",
-    "credits_entry.tmpl",
-  ]
-
-  outputs = [
-    about_credits_file,
-  ]
-
-  args = [
-    "credits",
-    rebase_path(about_credits_file, root_build_dir),
-    "--file-template",
-    rebase_path("credits.tmpl", root_build_dir),
-    "--entry-template",
-    rebase_path("credits_entry.tmpl", root_build_dir),
-  ]
-}