[Samba] Suggested documentation update: remove reference to CONFIG_EXT4_FS_XATTR

[Marc Muehlfeld]

Hello,

Am 29.08.2016 um 18:26 schrieb outlook_FEDB99F04FA54CA1--- via samba:
> It seems this configuration option no longer appears in recent
> kernels, and that's been true for a while now; but it's
> referenced at:
> 
> https://wiki.samba.org/index.php/Operating_system_requirements/File_system_support

You're right. The option was removed in 2012 and since this time it's
enabled:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=939da1084458246d2e29dd921c2012c177000e96

I updated the Wiki page.

Thanks.

Regards,
Marc