[freeciv-data] (PR#2609) PATCH: clean up unit_upgrade_price

[glip - Thu Dec 19 14:10:16 2002]: 
> Removing an unused parameter should be considered.  Arguments for 
> keeping it might include compliance to a pattern established by 
> similar functions or future extensibility. 
 
Now I have considered it and came to the conclusion that it should be 
removed. New patch attached. 


-- Binary/unsupported file stripped by Ecartis --
-- Type: text/x-diff
-- File: cleanup_unit_upgrade_price-2.diff
-- Desc: cleanup_unit_upgrade_price-2.diff