Drop resetcf

This utility was useful on older VIA Epia-M boards, which we
have dropped from the tree a while ago. Hence drop the utility
as well.

Change-Id: Ie0d6303f4f4cfb6b21cd90696c60e124f0a5f4d8
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/10119
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

util/resetcf/resetcf.c

@@ -1,42 +0,0 @@
-#include <stdio.h>
-#include <fcntl.h>
-
-#include <unistd.h>
-#include <sys/mman.h>
-
-main(int argc, char *argv[])
-{
-  int i;
-  volatile unsigned char *cp;
-  int fd;
-  void *v;
-  off_t nvram;
-  size_t length = 0x1000;
-
-  fd = open("/proc/bus/pci/00/0a.1",O_RDONLY);
-  lseek(fd,0x10,0);
-  read(fd,&nvram,sizeof(nvram));
-  close(fd);
-  //printf("Star %x\n",nvram);
-
-  if((fd = open("/dev/mem",O_RDWR)) != -1)
-    {
-      v = mmap(0, length, PROT_READ | PROT_WRITE, MAP_SHARED,fd,nvram);
-      fprintf(stderr, "mmap returns %p\n", v);
-
-      if ( v == (void *) -1)
-	{
-	  perror("mmap");
-	  exit(1);
-	}
-    } else {
-      perror("open /dev/mem");
-      exit(1);
-    }
-
-    for( i = 0x836 ; i < 0x840 ; i++){
-	*(unsigned char *)(v+i) = 0;
-    }
-
-
-}