goals_v5: remove tag "Overworld" from Carrot goals

[rybak]

Per https://minecraft.fandom.com/wiki/Zombified_Piglin :

[...] some zombified piglins have the ability to spawn reinforcements when attacked (similar to zombies and which can rarely include actual zombies).

One of loot drops of Zombies is Carrot. Which means that tag "Overworld" can be removed from "Golden Carrot". Because String is available in the Nether via Striders, tag "Overworld" can also be removed from goal "Carrot on a Stick".

---

See also: https://discord.com/channels/131720430326120449/819186365085253673/927201778334851142