Revert of Convert network hints to Mojo

components/network_hints/public/interfaces/BUILD.gn

Index: components/network_hints/public/interfaces/BUILD.gn
diff --git a/components/network_hints/public/interfaces/BUILD.gn b/components/network_hints/public/interfaces/BUILD.gn
deleted file mode 100644
index f04e95fcac2881749d4fa4e19ff49d295f2c0769..0000000000000000000000000000000000000000
--- a/components/network_hints/public/interfaces/BUILD.gn
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright 2016 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")
-
-# GYP version: components/network_hints.gypi:network_hints_mojom
-mojom("network_hints_mojom") {
-  sources = [
-    "network_hints.mojom",
-  ]
-
-  public_deps = [
-    "//url/mojo:url_mojom_gurl",
-  ]
-}