[PATCH] file-list: remove unused variable

[Marco Felsch]

On 24-04-17, Sascha Hauer wrote:
> struct file_list::num_entries is only ever used to check if a file list
> is empty. Do this check with list_empty() instead and remove the unused
> member.
> 
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>

Reviewed-by: Marco Felsch <m.felsch at pengutronix.de>