Why is Stinger still in the game?
The only item it builds into still is Nashor's Tooth (on Summoner's Rift), and as it gives on-hit damage, it would make way more sense to build out of Recurve Bow. A slightly different build for Nashor's Tooth and the replacement of Dervish Blade with Mercurial Scimitar (its counterpart on the other two maps) would be the only other change besides removing the item, and I highly doubt that anybody would miss the item as long as Merc Scimitar was available as a replacement. Even if Zephyr were to be reimplemented, other items could build into it, like Zeal (which would make more sense for the movement speed anyways).
I honestly see no reason for it to still be in the game, and I would think it just adds more maintenance cost than anything to the game and Rito would want to remove it.



and
- will value Stinger more than Recurve Bow.