Mojo: Simplify typemap usage.

mojo/public/interfaces/bindings/tests/struct_with_traits.typemap

Index: mojo/public/interfaces/bindings/tests/struct_with_traits.typemap
diff --git a/mojo/public/interfaces/bindings/tests/struct_with_traits.typemap b/mojo/public/interfaces/bindings/tests/struct_with_traits.typemap
deleted file mode 100644
index 0d6e7b292371dc02c973294f1f01e9f789c3891d..0000000000000000000000000000000000000000
--- a/mojo/public/interfaces/bindings/tests/struct_with_traits.typemap
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2015 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.
-
-{
-  "c++": {
-    "mojo.test.StructWithTraits": {
-      "typename": "mojo::test::StructWithTraitsImpl",
-      "public_headers": [
-        "mojo/public/cpp/bindings/tests/struct_with_traits_impl.h"
-      ],
-      "traits_headers": [
-        "mojo/public/cpp/bindings/tests/struct_with_traits_impl_traits.h"
-      ]
-    }
-  }
-}