Remove the last bits of the Sky Inspector

sky/services/inspector/BUILD.gn

Index: sky/services/inspector/BUILD.gn
diff --git a/sky/services/inspector/BUILD.gn b/sky/services/inspector/BUILD.gn
deleted file mode 100644
index 5a9b3d39c1666e2240b718828363b38f72f754e7..0000000000000000000000000000000000000000
--- a/sky/services/inspector/BUILD.gn
+++ /dev/null
@@ -1,17 +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/tools/bindings/mojom.gni")
-
-group("inspector") {
-  deps = [
-    ":bindings",
-  ]
-}
-
-mojom("bindings") {
-  sources = [
-    "inspector.mojom",
-  ]
-}