Remove sprintf

Remove sprintf as if you can't easily use snprintf then you probably
have buffer overflow.

Change-Id: Ic4570e099a52d743aca938a2bfadb95981adc503
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4280
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/console/vsprintf.c

@@ -57,20 +57,6 @@ static int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
 	return i;
 }
 
-int sprintf(char *buf, const char *fmt, ...)
-{
-	va_list args;
-	int i;
-
-	va_start(args, fmt);
-	/* A trick: we have at most (size_t)-1 adressable space anyway, so
-	   if we output so much we'll crash anyway.  */
-	i = vsnprintf(buf, -1, fmt, args);
-	va_end(args);
-
-	return i;
-}
-
 int snprintf(char *buf, size_t size, const char *fmt, ...)
 {
 	va_list args;

src/include/string.h

@@ -16,7 +16,6 @@ void *memset(void *s, int c, size_t n);
 int memcmp(const void *s1, const void *s2, size_t n);
 void *memchr(const void *s, int c, size_t n);
 #if !defined(__PRE_RAM__)
-int sprintf(char * buf, const char *fmt, ...);
 int snprintf(char * buf, size_t size, const char *fmt, ...);
 #endif