Anything that is written in double-space. Purely personal, but it just reminded me of lazy students trying to cheat their page count for an essay.
That, and dialogue that is basically an info-dump, or expositionary, between characters that should not need it. Like,
"Hey, have you seen John?"
"John Smith, the Town Only Blacksmith from down the street? I heard that his swords are the best in town. Yes, he should be in the Blacksmith Building down the street."
"Okay, thanks. I just want to ask him to come down to the Town Only Tarven, Gillian's Pub, to have some of the Town's Signature Ale together. You coming?"
"Oh, Town's Signature Ale? The only drink the three of us friends, growing up here for twenty years of our life and never left the town, ever have? I'm coming!"
Like, c'mon, man. You can do better than that! Have your language teach' never teach you Show, Don't Tell? At least try a little!