>>37669192A few of them.
Mollux lost its purpose after weather got nerfed. All it is now is a bulky attacker that's weak to stealth rocks and 4x weak to earthquake.
Pyroak was meant to be an offensively threatening subseeder. Now it's a mediocre wall, kept relevant only because it checks steels and resists fairy.
Revenankh's typing used to make it a pretty good tank. Now it can't really compete with all the better bulky pokemon, even after they gave it triage.