Revert of Add remoting and PPAPI tests to GN build

remoting/host/setup/BUILD.gn

Index: remoting/host/setup/BUILD.gn
diff --git a/remoting/host/setup/BUILD.gn b/remoting/host/setup/BUILD.gn
deleted file mode 100644
index a08620e99b2e6148928040c588d1d01e7ba1927d..0000000000000000000000000000000000000000
--- a/remoting/host/setup/BUILD.gn
+++ /dev/null
@@ -1,32 +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("//remoting/remoting_srcs.gni")
-
-source_set("setup") {
-  sources =
-      rebase_path(remoting_host_srcs_gypi_values.remoting_host_setup_sources,
-                  ".",
-                  "//remoting")
-
-  configs += [
-    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-    "//build/config/compiler:no_size_t_to_int_warning",
-    "//build/config/compiler:wexit_time_destructors",
-    "//remoting:version",
-  ]
-
-  deps = [
-    "//base",
-    "//google_apis",
-    "//remoting/host",
-  ]
-
-  if (is_win) {
-    deps += [
-      #remoting_lib_idl",  TODO(GYP) Windows target for remoting.
-      "//google_update",
-    ]
-  }
-}