Remove //sky/tools/tester

sky/tools/tester/BUILD.gn

Index: sky/tools/tester/BUILD.gn
diff --git a/sky/tools/tester/BUILD.gn b/sky/tools/tester/BUILD.gn
deleted file mode 100644
index 2db5dbe4790e83668a62c441d6c0fe101a2239cd..0000000000000000000000000000000000000000
--- a/sky/tools/tester/BUILD.gn
+++ /dev/null
@@ -1,31 +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/mojo_application.gni")
-
-mojo_native_application("tester") {
-  output_name = "sky_tester"
-
-  sources = [
-    "test_harness_impl.cc",
-    "test_harness_impl.h",
-    "test_runner.cc",
-    "test_runner.h",
-    "tester.cc",
-  ]
-
-  deps = [
-    "//base",
-    "//mojo/application",
-    "//mojo/converters/geometry",
-    "//mojo/converters/input_events",
-    "//mojo/public/cpp/bindings",
-    "//mojo/public/cpp/system",
-    "//mojo/public/cpp/utility",
-    "//mojo/services/input_events/public/interfaces",
-    "//mojo/services/view_manager/public/cpp",
-    "//services/window_manager:lib",
-    "//sky/services/testing:interfaces",
-  ]
-}