Remove defunct skydb debugger.

services/debugger/BUILD.gn

Index: services/debugger/BUILD.gn
diff --git a/services/debugger/BUILD.gn b/services/debugger/BUILD.gn
deleted file mode 100644
index ebf0d42ce6bf8c65faf3c963109141930a17e3ad..0000000000000000000000000000000000000000
--- a/services/debugger/BUILD.gn
+++ /dev/null
@@ -1,30 +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("debugger") {
-  output_name = "debugger"
-
-  sources = [
-    "debugger.cc",
-    "trace_collector.cc",
-    "trace_collector.h",
-  ]
-
-  deps = [
-    "//base",
-    "//base/allocator",
-    "//mojo/application",
-    "//mojo/data_pipe_utils",
-    "//mojo/public/cpp/bindings",
-    "//mojo/public/cpp/system",
-    "//mojo/public/cpp/utility",
-    "//mojo/services/http_server/cpp",
-    "//mojo/services/http_server/interfaces",
-    "//mojo/services/network/interfaces",
-    "//mojo/services/tracing/interfaces",
-    "//mojo/services/window_manager/interfaces",
-  ]
-}