Yeah, I've definitely had to cut stuff before, a lot of stuff I was quite fond of even. A few scenes, several characters. It can be rough!
That said, I feel like a lot of the time, my feelings on the matter change over time. Oftentimes I'll cut stuff and feel bad about it, only to look back on it and realize wow, the story is really better off without it. Like, sometimes chopping off that one scene you think is super cool but doesn't work that well just makes room for an even cooler scene that works way better.
The inverse happens sometimes too, where I cut stuff early because I wasn't too fond of it at the time, only to look back on it later and go man, I kind of miss it. This happens most often with characters, because I'm a clingy person who gets too attached to her characters, lol. Maybe some of them I can bring back in other stories, who knows.
...also, because I too misread the question at first, I have definitely killed off plenty of characters, lol. Including several I felt really bad about killing!