Remove unused files, and tidy the directory structure of the remaining ones.

firmware/lib/rollback_index.c

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * Functions for querying, manipulating and locking rollback indices
  * stored in the TPM NVRAM.
  */
 
 #include "rollback_index.h"
 
@@ skipping 342 matching lines @@
   return TPM_SUCCESS;
 }
 
 uint32_t LockFirmwareVersions() {
   return TlclSetGlobalLock();
 }
 
 uint32_t LockKernelVersionsByLockingPP() {
   return TlclLockPhysicalPresence();
 }