Remove code for Mac and Linux virtual print drivers.

cloud_print/virtual_driver/posix/installer_util_mac.h

Index: cloud_print/virtual_driver/posix/installer_util_mac.h
diff --git a/cloud_print/virtual_driver/posix/installer_util_mac.h b/cloud_print/virtual_driver/posix/installer_util_mac.h
deleted file mode 100644
index 99833134258c457cac2ab51e7ea8f29d6afa0e6b..0000000000000000000000000000000000000000
--- a/cloud_print/virtual_driver/posix/installer_util_mac.h
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright (c) 2011 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.
-
-#ifndef CLOUD_PRINT_VIRTUAL_POSIX_INSTALLER_UTIL_MAC_H_
-#define CLOUD_PRINT_VIRTUAL_POSIX_INSTALLER_UTIL_MAC_H_
-#pragma once
-
-#import <ApplicationServices/ApplicationServices.h>
-
-namespace cloud_print {
-void sendServiceProcessEvent(const AEEventClass sendClass);
-}   // namespace cloud_print
-
-#endif  // CLOUD_PRINT_VIRTUAL_POSIX_INSTALLER_UTIL_MAC_H_
-