Remove wm_flow, browser, nesting_app examples

examples/browser/browser_host.mojom

Index: examples/browser/browser_host.mojom
diff --git a/examples/browser/browser_host.mojom b/examples/browser/browser_host.mojom
deleted file mode 100644
index 04d789b186681ba873bd874f59999a864f9022cc..0000000000000000000000000000000000000000
--- a/examples/browser/browser_host.mojom
+++ /dev/null
@@ -1,10 +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.
-
-module mojo.examples;
-
-interface BrowserHost {
-  // Performs a navigation
-  NavigateTo(string url);
-};