OvmfPkg: remove QemuBootOrderLib instance

This library instance is no longer referenced.

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Gary Ching-Pang Lin <glin@suse.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

OvmfPkg/Library/QemuBootOrderLib/ExtraRootBusMap.h

@@ -1,40 +0,0 @@
-/** @file
-  Map positions of extra PCI root buses to bus numbers.
-
-  Copyright (C) 2015, Red Hat, Inc.
-
-  This program and the accompanying materials are licensed and made available
-  under the terms and conditions of the BSD License which accompanies this
-  distribution.  The full text of the license may be found at
-  http://opensource.org/licenses/bsd-license.php
-
-  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
-  WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-**/
-
-#ifndef __EXTRA_ROOT_BUS_MAP_H__
-#define __EXTRA_ROOT_BUS_MAP_H__
-
-/**
-  Incomplete ("opaque") data type implementing the map.
-**/
-typedef struct EXTRA_ROOT_BUS_MAP_STRUCT EXTRA_ROOT_BUS_MAP;
-
-EFI_STATUS
-CreateExtraRootBusMap (
-  OUT EXTRA_ROOT_BUS_MAP **ExtraRootBusMap
-  );
-
-VOID
-DestroyExtraRootBusMap (
-  IN EXTRA_ROOT_BUS_MAP *ExtraRootBusMap
-  );
-
-EFI_STATUS
-MapRootBusPosToBusNr (
-  IN  CONST EXTRA_ROOT_BUS_MAP *ExtraRootBusMap,
-  IN  UINT64                   RootBusPos,
-  OUT UINT32                   *RootBusNr
-  );
-
-#endif