gnumach/device/blkio.c (disksort) unused function

[Miguel Figueiredo]

Hi all,

On gnumach/device/blkio.c, disksort function although declared here it's 
not used on gnumach nor on hurd.
I guess it's safe to remove in case of cleanup.
--
Melhores cumprimentos/Best regards,

Miguel Figueiredo