From: Finn Thain <redacted>
Date: Tue, 20 Feb 2018 11:42:26 +1100 (AEDT)

If there was an unused variables I would happily remove that too but the 
'version' string is not unused. The etherh.c and mac8390.c files both 
include "lib8390.c" and in there you'll find the 'version' string used in 
ethdev_setup().

My bad, thanks for being so patient with me :)