Revert "Move mojo edk into mojo/edk"

mojo/edk/test/BUILD.gn

Index: mojo/edk/test/BUILD.gn
diff --git a/mojo/edk/test/BUILD.gn b/mojo/edk/test/BUILD.gn
deleted file mode 100644
index 6a6f3126755513047f9b4faaf49fbaa0590c273b..0000000000000000000000000000000000000000
--- a/mojo/edk/test/BUILD.gn
+++ /dev/null
@@ -1,22 +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.
-
-# GYP version: mojo/mojo_base.gyp:mojo_common_test_support
-source_set("test_support") {
-  testonly = true
-  sources = [
-    "multiprocess_test_helper.cc",
-    "multiprocess_test_helper.h",
-    "test_utils.h",
-    "test_utils_posix.cc",
-    "test_utils_win.cc",
-  ]
-
-  deps = [
-    "//base",
-    "//base/test:test_support",
-    "//mojo/edk/system",
-    "//testing/gtest",
-  ]
-}