If I had to choose something, then I guess the useless baby Pokemon would be my picks. I'm fine with ones for Pokemon that make sense as a second evolution, but stuff like Igglybuff and Chingling really don't need to exist.
Otherwise, there's no Pokemon that I actively dislike enough to wish them gone.
If you actively hate Justin Bieber... then you don't know what "intended audience" means. Hate Twilight instead, it's far worse.
The chandelier Pokemon (I think they're called something like 'Chandelure' in English) are based on the Bakemono, which is probably one of the most well known monsters in Japanese folklore. So it's really not that bad of a design.
I can read minds. Just kidding, I just have good intuition.