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Retired random events
Some random events are no longer active, which in most cases is because the person (or creature) responsible was considered to no longer be up to the job. Most of the guardians, for example, now spend their days in the Enchanted Valley (which you can get to using the fairy rings), while some of the more unsavoury types, like Cap'n Hand, reside in Port Sarim jail. You'll still see Dr Jekyll from time to time, dashing to the Varrock apothecary in a desperate bid to keep Mr Hyde in check; and if you're in Karamja to the south-west of Brimhaven, you may come across the strange plant, which still produces rather excellent fruit. The Drunken Dwarf will also be seen on occasion, staggering about in an erratic fashion. If you talk to him, and he takes a liking to you, he might treat you to a kebab and some beer.
Found this in the knowledge base, should answer your question about the extinct fruit. the plant still gives it out, it just is no longer a random.