Cr50: Remove unused wipe_nvram() function.

Nothing uses this. Take it out.

BUG=none
BRANCH=none
TEST=make buildall

Change-Id: I4512130a97a54cf23ec6d715c4776b7b4d1b59a1
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/382662
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>

board/cr50/tpm2/NVMem.c

@@ -213,12 +213,3 @@ void _plat__ClearNvAvail(void)
 	s_NvIsAvailable = FALSE;
 	return;
 }
-
-void wipe_nvram(void)
-{
-#ifdef CONFIG_FLASH_NVMEM
-	nvmem_setup(0);
-#else
-	memset(s_NV, 0xff, sizeof(s_NV));
-#endif
-}

board/cr50/tpm2/memory.h

@@ -1,12 +0,0 @@
-/* Copyright 2015 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.
- */
-
-#ifndef __EC_BOARD_CR50_TPM2_MEMORY_H
-#define __EC_BOARD_CR50_TPM2_MEMORY_H
-
-/* A function to reinitialize the TPM NVram. */
-void wipe_nvram(void);
-
-#endif /* __EC_BOARD_CR50_TPM2_MEMORY_H */

chip/g/upgrade_fw.c

@@ -10,7 +10,6 @@
 #include "flash.h"
 #include "hooks.h"
 #include "include/compile_time_macros.h"
-#include "memory.h"
 #include "system.h"
 #include "registers.h"
 #include "uart.h"