env_flash.c: Drop unused variables

With 7ce1526e we no longer need 'len' or 'res', so drop these variables.
Signed-off-by: NTom Rini <trini@ti.com>

common/env_flash.c

@@ -224,9 +224,8 @@ int env_init(void)
 int saveenv(void)
 {
 	env_t	env_new;
-	ssize_t	len;
 	int	rc = 1;
-	char	*res, *saved_data = NULL;
+	char	*saved_data = NULL;
 #if CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE
 	ulong	up_data = 0;